"Giant Steps" is a jazz composition by John Coltrane, first appearing as the first track on the album of the same name (1960). The composition is a milestone in jazz, given the difficulty of improvising its rapid progression of chord changes that progress through three keys (see Coltrane changes) shifted by major thirds, creating an augmented triad.

Recording
The original recording features Coltrane (tenor saxophone), Paul Chambers (double bass), Tommy Flanagan (piano), and Art Taylor (drums). John Coltrane was known for coming into the studio with unrehearsed songs, and "Giant Steps" was no exception. On the original recording, Tommy Flanagan (piano) played a choppy start-stop solo where it sounds like he is struggling to improvise over Coltrane changes without adequate preparation. Flanagan would revisit "Giant Steps" on several recordings later in his career and mastered the progression. In some of the alternate takes, Cedar Walton is at the piano, declining to take a solo and also playing at a slower tempo than the takes with Flanagan.
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http://en.wikipedia.org/wiki/Giant_Steps_(composition)