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Jazz improvisation

From Wikipedia, the free encyclopedia

Jazz improvisation by Col Loughnan (tenor saxophone) at the Manly Jazz Festival with the Sydney Jazz Legends. Loughnan was accompanied by Steve Brien (guitar), Craig Scott (double bass, face obscured), and Ron Lemke (drums).

Jazz improvisation is the spontaneous invention of melodic solo lines or accompaniment parts. It is one of the defining elements of jazz. Improvisation is composing on the spot, when a singer or instrumentalist invents melodies and lines over a chord progression played by rhythm section instruments (piano, guitar, double bass) and accompanied by drums. Although blues, rock, and other genres use improvisation, it is done over relatively simple chord progressions which often remain in one key (or closely related keys using the circle of fifths, such as a song in C Major modulating to G Major).

Jazz improvisation is distinguished from this approach by chordal complexity, often with one or more chord changes per bar, altered chords, extended chords, tritone substitution, unusual chords (e.g., augmented chords), and extensive use of ii–V–I progression, all of which typically move through multiple keys within a single song. However, since the release of Kind of Blue by Miles Davis, jazz improvisation has come to include modal harmony and improvisation over static key centers, while the emergence of free jazz has led to a variety of types of improvisation, such as "free blowing", in which soloists improvise freely and ignore the chord changes.

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Transcription

[applause] Alright, so [applause] OK, so I want you to know we have not rehearsed anything here, okay? This is all going to be new. The orchestra, actually, has no idea what Ben's going to do. In fact, Ben doesn't know what he's going to do because he's going to ask you what to do. So a couple of things. I would like from the audience a key that Ben can work in. [audience shouts out suggestions] Whoa, that's a lot of people. I think I heard an A-minor in there. Okay? Okay A minor. Now could somebody give me a tempo. Do you want here ballad or do you want to hear something more upbeat. [audience: "upbeat"] Pretty universal. Okay now does anybody have a program booklet that has an interesting sentence in it? And because I can't decipher 50 sentences coming at once I'm gonna have some volunteers from the front here... Call out a sentence to me that's interesting. [audience calls out] I'm sorry, one more time. These new spaces are all designed to be flexible. Yeah, yes. [audience laughter] So, Ben is going to improvise in A minor, an upbeat song on "these new places are designed to be flexible." [applause] It has to be something completely new, right? [plays first 4 notes from Beethoven's 9th] OK [laughter] OK A minor. [music] These new spaces are all ... designed ... [audience laughing] to be flexible. [laughter] These new spaces are all all designed ... to be flexible, flexible, flexible, flexible. Okay let's see, now let's see... [applause] Cellos, let's try, um, Arco go um... [plays piano] [cellos play, correspondingly] [music] Yeah and then just one on the second one. [makes rhythm sounds] Great. Now let's move that down, then the same, the same thing and we can go to F so so that's, that's the A minor that's and that's with a 9 on it so [makes rhythm sounds] [makes rhythm sounds] and that's an F, a concert F. The C, G [makes rhythm sounds], 2 there [makes rhythm sounds] and then a low C Eeeee So whole cycles. [music] Okay great, now let's see, uh, [music] Let's do one size fits all sort of thing for the, uh, uh, the winds, reeds let's just take, like, flutes, oboes, and bassoon, clarinets, and just it just it this can be in whatever octave spread you want and we're gonna go... [music] No, no, let's just make it a harmony we go [music] I'm taking them out. Just, clarinets, two clarinets go E, concert E, and G go... [music] Let me hear that, make sure I don't suck. [laughter] [music] That's it. [music] OK you can let me hear that with the cellos for a moment... 3, 4... [music] Okay that, so when we go to that E we're gonna do that. So the first, the first one is uh, Sorry this takes a second to create a whole song. [laughter] And I'm gonna take something back about the cellos, let's just do that one cycle on each one [rhythmic sounds: bum, bum, bum, bum] and yeah [rhythmic sounds: bum, bum, bum, bum] [music] And then, ah [music] Then the clarinets [music] Yeah, so let's try that. Two, three, four [music] Ok this last one of the cycles goes [music] So move that, ah, G up anyone has the G moving up to G sharp [music] Okay great. Now, uh, uh, [music] Okay, uh, violins, first violins let's go, uh, A [music] Great and then the second violins go up... [music] Uh, so you'll go to E. Eeee...B [music] OK, you're going... [music] Great, let's hear it all together, make sure it's not crazy. two, three, four [music] OK, great. Thank you, now, uh.. I'll give the, uh, the viola a little timing sizzle here, just go... one, [music] Great, perfect, and then and then double-basses you know what you must do... [music] [applause] OK, let's start it from the top. Now if there's anyone who would like a drum set you know what to do... [laughter] Um, and, uh, then I'd say, uh, you know if there's a trumpet player that wants to take a solo after the first course when I run out of ideas then you can just jump right in. OK, so let's, uh, and then, you can bring anyone in and out that you want to but I think I'm probably almost over my time when, I had to write a song in ten minutes so... let's just start in, or close to it. one, two, three, four... [music] For more than 25 years the JFK Center, with the performing arts has served as a living memorial to President Kennedy by bringing an unparalleled diversity to our arts. Our nation's capital... And serving a critical role as a leading provider of the arts education mission across the USA and around the world [music] These new spaces... [laughter] are all designed to be flexible These new spaces are all designed ... Let's milk it, make it a little bit louder now. Mezzo forte. Forte Double forte... double forte Fortissimo. Fivetisimo [music] Let's take it out now, you ready? Way down here... [music] [applause] Thank you very much. [applause] Um, so for those of you that are obviously liking Ben Folds' work... [laughter] Available in the lobby... he will be the next artistic advisor for the National Symphony Orchestra. [applause] Mr. Ben Folds. [applause]

Contents

Types

Jazz improvisation can be divided into soloing and accompaniment.

Soloing

When soloing, a performer (instrumentalist or singer) creates a new melodic line to fit a song's chord progression. During a solo, the performer who is playing the solo is the main focus of the audience's attention. The other members of the group usually accompany the solo, except for some drum solos or bass solos in which the entire band may stop while the drummer or bassist performs.

When a singer improvises a new melody over chord changes, it is called scat singing. When singers are scat-singing, they typically use made-up syllables ("doo-bie-bo-ba"), rather than use the lyrics of the song. Soloing is often associated with instrumental or vocal virtuosity; while many artists do use advanced techniques in their solos, this is not always done. For example, some 1940s and 1950s-era bass solos consist of the bassist playing a walking bassline.

There are a number of approaches to improvising jazz solos. During the swing era, performers improvised solos by ear by using riffs and variations on the tune's melody. During the bebop era in the 1940s, jazz composers began writing more complex chord progressions. Saxophone player Charlie Parker began soloing using the scales and arpeggios associated with the chords in the chord progression.

Accompaniment

In jazz, when one instrumentalist or singer is doing a solo, the other ensemble members play accompaniment parts. While fully written-out accompaniment parts are used in large jazz ensembles, such as big bands, in small groups (e.g., jazz quartet, piano trio, organ trio, etc.), the rhythm section members typically improvise their accompaniment parts, an activity called "comping". In jazz, the instruments in the rhythm section depend on the type of group, but they usually include a bass instrument (double bass, electric bass), one or more instruments capable of playing chords (e.g., piano, electric guitar) and drum kit. Some ensembles may use different instruments in these roles. For example, a 1920s-style Dixieland jazz band may use tuba as a bass instrument and banjo as the chordal instrument. A 1980s-era jazz-rock fusion band may use synth bass for the bassline and a synthesizer for chords. Some bands add one or more percussionists.

In small groups, the rhythm section members typically improvise their accompaniment parts. Bass instrument players improvise a bassline using the chord progression of the key as a guide. Common styles of bass comping parts include a walking bassline for 1920s-1950s jazz; rock-style ostinato riffs for jazz-rock fusion; and Latin basslines for Latin jazz. Improvised basslines typically outline the harmony of each chord by playing the root, third, seventh and fifth of each chord, and playing any other notes that the composer has requested in the chord (e.g., if the chord chart indicates a sixth chord on the tonic in C Major, the bassist might include the sixth degree of the C Major scale, an "A" note, in her/his bassline).

The chordal instrument players improvise chords based on the chord progression. Chordal instrument players use jazz chord voicings that are different from those used in popular music and classical music from the common practice period. For example, if a pop musician or one from the Baroque music era (ca. 1600-1750) were asked to play a dominant seventh chord in the key of C Major, they would probably play a root position chord named G7 (or "G dominant seventh"), which consists of the notes G, B, D and F, which are the root, third, fifth and flat seventh of the G chord. A post-Bebop era jazz player who was asked to play a dominant seventh chord in the key of C Major might play an altered dominant chord built on G. An altered dominant contains flattened or sharpened "extensions" in addition to the basic elements of the chord. As well, in jazz, chordal musicians often omit the root, as this role is given to the bass player. The fifth of the chord is often omitted as well, if it is a perfect fifth above the root (as is the case in regular major chords and minor chords.

The altered extensions played by a jazz guitarist or jazz pianist on an altered dominant chord on G might include (at the discretion of the performer) a flatted ninth Ab (a ninth scale degree flattened by one semitone); a sharp eleventh C# (an eleventh scale degree raised by one semitone) and a flattened thirteenth Eb (a thirteenth scale degree lowered by one semitone). If the chordal playing musician were to omit the root and fifth of the dominant seventh chord (the G and D) and keep the third (B) and flatted seventh (F), and add the altered tones just listed (Ab, C# and Eb), the resulting chord would be the pitches B, C#, Eb, F, Ab, which is a much different-sounding chord than the standard G7 played by a pop musician (G, B, D, F). In Classical harmony and in pop music, chord voicings often double the root to emphasize the foundation of the chord progression.

Soloing techniques

Melodic variation and playing by ear

From the dixieland era through to the swing music era, many solo performers improvised by varying and embellishing the existing melody of a song and by playing by ear over the chord changes using well-known riffs. While this approach worked well during these musical eras, given that the chord progressions were simpler and used less modulation to unusual keys, with the development of bebop in the 1940s, the embellishment and "playing by ear" approach was no longer enough.

Although swing was designed for dancing, bebop was not. Bebop used complex chord progressions, unusual altered chords and extended chords, and extensive modulations, including to remote keys that are not closely related to the tonic key (the main key or home key of a song). Whereas Dixieland and swing tunes might have one chord change every two bars with some sections with one chord change per bar, bebop tunes often had two chord changes per bar with many changing key every four bars. In addition, since bebop was written for listening rather than dancing, the tempo was not constrained by danceability; bebop tunes were often faster than those of the swing era.

With bebop's complex tunes and chords and fast tempo, melodic embellishments and playing by ear were no longer sufficient to enable performers to improvise effectively. Saxophone player Charlie Parker began to solo by using scales associated with the chords, including altered extensions such as flattened ninths, sharpened elevenths and flattened thirteenths, and by using the chord tones and themselves as a framework for the creation of chromatic improvisation.

Modes

Modes are all the different musical scales and may be thought of as being derived from various chords. Musicians can use these modes as a pool of available notes. For example, if a musician comes across a C7 chord in a tune, the mode to play over this chord is a C mixolydian scale.

These are various chord derivations that help musicians know which chord is associated with a certain scale or mode:

Targeting

One of the key concepts of improvisation is targeting, a technique used by Parker.[1] Targeting means landing on the tones of a chord. A chord is built of a root (1st) and the notes a 3rd, 5th, 7th, 9th, 11th and 13th above the root in the scale. There are a number of ways to target a chord tone. The first is by ascending or descending chromatic approach (chromatic targeting). This means playing the note a semitone above or below one of the chord tones. In the key of C, the notes in the tonic chord are C(1st or root of chord), E(3rd), G(5th), and B(7th). So by playing an E flat at the end of a line then resolving (moving up a semitone) to an E, this would be one basic example of targeting and would be targeting the third of the chord (E). This may be used with any factor of any type of chord, but rhythm is played so that the chord tones fall on the downbeats.[1]

In Bebop melodic improvisation, targeting often focused on the 9th, 11th and 13th of the chord - the colour tones - before resolving later in the phrase to a 7th chord tone. In bebop the 9th, 11th and 13th notes were often altered by adding sharps or flats to these notes. Ninths could be flatted or sharpened. Elevenths were typically played sharpened. Thirteenths were often played flat. Enclosure is the use of scale tone(s) above the targeted note and chromatic tone(s) below, or scale tone(s) below and chromatic tone(s) above.[1]

"Flat 9" theory

Another technique in jazz improvisation used by Parker[1] is known "three to flat nine". These numbers refer to degrees of the scale above the root note of a given chord in a chord progression. This is a bebop approach similar to targeting. This technique can be used over any dominant chord that can be treated as a flat nine (b9) dominant chord. It entails moving from the third of a dominant chord, to the flat nine of a dominant chord, by skipping directly to the ninth, or by a diminished arpeggio (ascending: 3rd, 5th 7th, 9th). The chord often resolves to a major chord a perfect fourth away. For example, the third of a G7 chord is B, while the flat ninth is A. The chord resolves to C and the note A leads to G.[1]

Pentatonics

Pentatonic scales are also commonly used in jazz improvisation, drawing perhaps from their use in the blues. Saxophone player John Coltrane used pentatonics extensively. Most scales are made up of seven notes: (in the key of C – the major scale) C D E F G A B). The major pentatonic scale comprises only five notes of the major scale (C pentatonic scale is C D E G A), whereas the minor pentatonic scale comprises the five notes (C E F G B). Pentatonics are useful in pattern form and that is how they are usually played. One pattern using the pentatonic scale could be 3 6 5 2 3 5 (in C: E A G D E G). Pentatonic scales also became popular in rock music, jazz fusion and electric blues.

Cells and lines

Lines (also known as licks) are pre-planned ideas the artist plays over and over during an improvised solo. Lines can be obtained by listening to jazz records and transcribing what the professionals play during their solos. Transcribing is putting what you hear in a record onto music paper. Cells are short musical ideas. They are basically the same things as lines, but they are shorter.

Phrasing

Phrasing is a very important part of jazz players' set of improvisational skills. Instead of just playing a sequence of scale and chord notes that would work based on the chords, harmony, etc., the player builds an idea based on a melodic motif or a rhythmic motif. The player in effect extemporizes a new melody for a tune's chord progression. Alto saxophonist Charlie Parker, who is considered to be an exemplar of jazz improvisation, paid special attention to the beginning and ending of his solos where he placed signature patterns that he developed over the years.[2] The middle part of his solos used more extemporaneous material that was created in the moment. This shows a developed style of musical phrasing where the shape of the melody has a logical conclusion. With his strong beginning, Parker was free to create solos that demonstrated musical phrasing, and led to a logical and memorable conclusion. Examples of this motif-based approach in a compositional context are found in classical music. In Beethoven's fifth symphony, the first rhythmic and melodic idea is played again with many variations.[2]

Sociology

Eugene W. Holland has proposed jazz improvisation as a model for social and economic relations in general.[3][4] Edward W. Sarath has proposed jazz improvisation as a model for change in music, education, and society.[5]

References

  1. ^ a b c d e Christiansen, Cory (2001). Mel Bay presents essential jazz lines, the style of Charlie Parker (Guitar ed.). Mel Bay Publications. p. 15. ISBN 9780786660735.
  2. ^ a b Bash, L. (1991). Improving improvisation. Music Educators Journal, 78(2), 44.
  3. ^ Holland, Eugene W. (2008). "Jazz Improvisation: Music of the People-to-Come". Deleuze, Guattari and the Production of the New, Simon O'Sullivan & Stephen Zepke, Eds.: 196–205.
  4. ^ Holland, Eugene W. (2004). "Studies in Applied Nomadology: Jazz Improvisation and Post-Capitalist Markets". Deleuze and Music, Ian Buchanan & Marcel Swiboda, Eds.: 20–35.
  5. ^ Sarath, Edward W. (2014). Improvisation, Creativity, and Consciousness: Jazz as Integral Template for Music, Education, and Society. SUNY series in Integral Theory. ISBN 978-1438447223.
This page was last edited on 14 September 2019, at 22:25
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