"Quartet No. 1" uses a 1-chord (G altered) solo vamp over a rock beat in 3/4, and a repeated theme that uses stacked fourths.
The second track, "Quartet No. 2 (Part I)" is a ballad, dedicated to jazz pioneer Duke Ellington, incorporating many of the Western classical harmonies and tensions that Ellington used in much of his playing. "Quartet No. 2 (Part II)" is dedicated to jazz saxophone legend John Coltrane.
Track listing
All compositions by Chick Corea except as noted.
"Quartet No. 1" – (10:16)
"Quartet No. 3" – (9:41)
"Quartet No. 2" - Part I (Dedicated to Duke Ellington)" – (7:09)
"Quartet No. 2" - Part II (Dedicated to John Coltrane)" – (12:01)
The CD reissue contains several tracks that were recorded during the same sessions as the original album but not released at the time. These are: