OK so the tune is 15" 40' long on the album.
For about 7 mins it keeps to the same funky two chord vamp thing - then it start going into a change - descending figure.
Then all stop at 7"40' when it's just drums changing the feel completely, bass enters with a more urgent feel...
Then at 8"40' Herbie starts his piano solo and there are more Jazzy chords and a more relaxed feel - this carries on to 11"50' when the descending chord chages break it up - back to piano solos a few time - alternating feels a few times with chromatic chords - then stop at 13" 15' and back to the original figure, Sax solo and fade out.. !! Phew!!
So... which part are we talking about!!
