“Chameleon” opens Herbie Hancock’s 1973 album Head Hunters, one of the best-selling jazz albums of all time. Co-written with members of the Headhunters band, it’s built on one of the most famous synth bass lines in music and became a defining track of jazz-funk.
The tune is built on a two-chord vamp, Bbm7 to Eb7, in Bb Dorian territory. The bass line and interlocking parts create a deep funk groove that the soloists ride for long stretches. A second section later in the track changes the feel and harmony, but most bands focus on the main vamp.
For improvisation, Bb Dorian and Bb minor pentatonic fit the vamp perfectly. Focus on rhythm and groove: short, syncopated phrases, repetition and call-and-response with the rhythm section. Hancock’s synthesizer solo on the original builds slowly and powerfully.
Practice the bass line, even if you’re not a bassist, to feel the groove. Then improvise short rhythmic phrases, leaving space. Keyboard players should practice clavinet-style comping.
Arrangement idea: start with the bass line alone for eight bars, then layer in drums, keyboard comping and finally the melody. During solos, let the groove breathe and build energy slowly. The original track runs over fifteen minutes, so feel free to stretch out and let the vamp evolve.
Practice checklist for the Chameleon Lead Sheet PDF: play the melody from memory, play roots through the form, play guide tones, improvise one chorus of chord tones only, and finally record yourself soloing over a play-along. Listening back is the fastest way to spot what to fix next.
Memorizing the Chameleon Lead Sheet PDF: learn the form in sections, not all at once. Play the first eight bars until you can do them with your eyes closed, then add the next section. Within a week or two you won’t need the page at all, which is the real goal of any lead sheet.
Is it hard to play? The harmony is easy; locking into the groove takes practice. Recordings to study: Head Hunters. Learn more about the composer on Herbie Hancock’s Wikipedia page, and find more jazz-funk lead sheets on Minedit.