[4] The album includes five arrangements by John Lewis of pieces by Johann Sebastian Bach, interspersed with four original blues pieces "on" [the name] "Bach"—in keys (and with titles) that spell out in order the name B-A-C-H.

from chorale prelude "The Old Year Has Now Passed Away"; "Rise Up in the Morning" from the 140th cantata "Sleepers Wake"; "Precious Joy" from the 147th cantata "Jesu, Joy of Man's Desiring"; "Don't Stop This Train" from the fugue by Johann Peter Kellner BWV Anh.

180 wrongly attributed to Bach;[5] and "Tears from the Children" from the Prelude 8 in E-flat minor from Book I of "The Well-Tempered Clavier".

The Allmusic review stated "This album has an interesting concept, alternating four original blues with five adaptations of melodies [sic] from classical works by Bach.

The Modern Jazz Quartet had long been quite adept in both areas, and despite a certain lack of variety on this set (alternating back and forth between the two styles somewhat predictably), the music is largely enjoyable".