All Blues
Encyclopedia
"All Blues" is a jazz composition by Miles Davis
Miles Davis
Miles Dewey Davis III was an American jazz musician, trumpeter, bandleader, and composer. Widely considered one of the most influential musicians of the 20th century, Miles Davis was, with his musical groups, at the forefront of several major developments in jazz music, including bebop, cool jazz,...

 first appearing on the influential 1959 album Kind of Blue
Kind of Blue
Kind of Blue is a studio album by American jazz musician Miles Davis, released August 17, 1959, on Columbia Records in the United States. Recording sessions for the album took place at Columbia's 30th Street Studio in New York City on March 2 and April 22, 1959...

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It is a 12 bar blues in 6/4; the chord sequence is that of a basic blues and made up entirely of 7th chords, with a ♭VI in the turnaround instead of just the usual V chord. In the song's original key of G this chord is an E♭7.

The piece is made even more distinctive by the bass vamp that repeats through the whole piece, except when a V or ♭VI chord is reached (the 9th and 10th bars of a chorus). Further to this, there is a harmonically similar vamp that is played by the horns (the two saxophones in the case of Kind of Blue) at the beginning and then (usually) continued by the piano under any solos that take place. Each chorus is usually separated by a four-bar vamp which acts as an introduction to the next solo/chorus!

While originally an instrumental piece and usually performed as such, lyrics were later written for it by Oscar Brown Jr..
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