This tune consists of five scales, which are each played as long as each soloists wishes until the series is completed. Coltrane's path was as follows:
• 4 bars of C ionian (CMaj7)
• 4 bars of Ab mixolydian (Ab7sus)
• 4 bars of Bb ionian (BbMaj7)
• 8 bars of D phrygian (EbMaj7(#11)/D)
• 4 bars of G dorian (Gm7)
Note he chose to spend more time on the darker phrygian mode that others did.
John Coltrane was 32 to 33 years old at the time.
Tenor Sax Key