There is a lot of music on this set, including the 30-minute "Oasis." This is a Live at the Village Vanguard recording by pianist Keith Jarrett and his European quartet (Jan Garbarek on soprano and tenor, bassist Palle Danielsson and drummer Jon Christensen). The pianist very much dominates the music but Garbarek's unique floating tone on his instruments and the subtle accompaniment by Danielsson and Christensen are also noteworthy.
Keith Jarrett (born May 8, 1945) is an American jazz and classical music pianist and composer. Jarrett started his career with Art Blakey, moving on to play with Charles Lloyd and Miles Davis. Since the early 1970s he has also been a group leader and a solo performer in jazz, jazz fusion, and classical music. His improvisations draw from the traditions of jazz and other genres, especially Western classical music, gospel, blues, and ethnic folk music. In 2003, Jarrett received the Polar Music Prize, the first recipient of both the contemporary and classical musician prizes, and in 2004 he received the Léonie Sonning Music Prize. His album, The Köln Concert, released in 1975, became the best-selling piano recording in history. In 2008, he was inducted into the Down Beat Jazz Hall of Fame in the magazine's 73rd Annual Readers' Poll.
The double album Sleeper contains a previously unreleased live concert by Keith Jarrett's European quartet from the '70s, recorded at Tokyo's Nakano Sun Plaza on April 16, 1979. Together with saxophonist Jan Garbarek, bassist Palle Danielsson, and drummer Jon Christensen, Jarrett performs seven of his own compositions: "Personal Mountains," "Innocence," "So Tender," "Oasis," "Chant of the Soil," "Prism," and "New Dance" the latter song being the shortest here at seven minutes, while "Oasis" clocks in at over 28 minutes!
It is very much out of character for the prolific Keith Jarrett and his producer Manfred Eicher to hold anything back, yet they've done it here, releasing these live tapes of Jarrett's European quartet ten years after they were recorded. Presumably, they did it in order not to distract attention from Nude Ants, which was recorded a week after these concerts, but that never stopped them before from just piling on more discs. In any case, these Tokyo recordings were too good to hide; the quartet had reached an interactive creative high around this time, often burning at the rarified level that Nude Ants reached. Jarrett is both lyrically effusive and able to ignite his European colleagues into giving him more swinging support than on earlier sessions. In particular, the title track has a lot of the exploratory fervor of "New Dance" from Nude Ants, and "Late Night Willie" gets down deep into the Jarrett gospel feeling.