Mysteries: The Impulse Years 1975–1976

Mysteries: The Impulse Years 1975–1976
Compilation album by
Released1996
RecordedDecember 10–12, 1975 (discs 1 and 2); October 14–16, 1976 (discs 3 and 4)
StudioGeneration Sound, New York City
GenreJazz
LabelImpulse!
IMPD-189
ProducerEd Michel
Keith Jarrett chronology
Keith Jarrett at the Blue Note
(1995)
Mysteries: The Impulse Years 1975–1976
(1996)
La Scala
(1997)

Mysteries: The Impulse Years 1975–1976 is a four CD collection of the Keith Jarrett albums Mysteries, Shades, Byablue and Bop-Be. The set was released in 1996 by Impulse! Records and in 1997 by Aris / MCA. Previously unreleased alternate takes are present on each disc.

The music was performed by Jarrett and his affectionately-titled 'American Quartet', composed of Charlie Haden, Paul Motian, and Dewey Redman. Guilherme Franco contributed additional percussion to Mysteries and Shades.

In 1997, a 5-CD box set called The Impulse Years: 1973-1974 was also released, composed of Fort Yawuh, Treasure Island, Death and The Flower, and Back Hand.

Aside from their appearances in this box set, Shades and Bop-Be have only ever been released individually on CD in Japan. Shades was later reissued internationally (with Mysteries, as a single disc set) as part of the Impulse! 2-on-1 series in 2011.