This is a great standard tune by Miles Davis from his “Kind of Blue” album, which is touted by many to be the top-selling jazz album of all time. Rolling Stone rates this classic album as the #12 all-time greatest album of all time of any genre. This album definitely transcends jazz. This is the only song from that album in which Wynton Kelly plays the piano. Miles uses Bill Evans for all the other tracks.
This is a blues form that goes around twice (24 bars total). It uses a bVII chord in the last two bars the first time, and in bar 11 only the second time, resolving up to the I7 chord.
Notice that the solos on the Miles Davis recording have been turned into scat vocalese by Jon Hendricks and his crew (Al Jarreau, George Benson, and Bobby McFerrin). Very cool!