This AABA form consisting of four eight-bar phrases, as well as the 12-bar blues, are two of the most
common forms in swing and bebop styles.
Only the A section contains a composed melody, the B section (the so-called “bridge”) has been left
open for improvisation. This practice is also common in the bebop tradition.
The melodic language of the theme resembles bebop, which is why we could consider
Invisible as one of Jost’s first type of Coleman melodies28. The form of the melody is
clearly an alternating sequence consisting of four call and response phrases.
The melodic contour of Invisible also contains embedded note progressions or “step
progressions”31. This technique was common already in bebop performance.
The melody also contains a repeating rhythmic