Coltrane first recorded it for his 1959 album Giant Steps, and it became one of his first well-known works.
It appears on The Complete Copenhagen Concert (1961), Live at the Village Vanguard Again!
According to Coltrane, "The tune is built ... on suspended chords over an E♭ pedal tone on the outside.
On the inside – the channel – the chords are suspended over a B♭ pedal tone.
"[1] The composition, on that recording, is a slow, restrained melody, with a brief piano solo by Wynton Kelly.