John Laird Abercrombie (December 16, 1944 – August 22, 2017) was an American jazz guitarist, composer and bandleader. His work explored jazz fusion, post bop, free jazz and avant-garde jazz. Abercrombie studied at Berklee College of Music in Boston, Massachusetts. He recorded his debut album, Timeless with Manfred Eicher's ECM label, and has recorded principally with this label since. Abercrombie has played with Billy Cobham, Ralph Towner, Jack DeJohnette, Charles Lloyd, Michael Brecker and Randy Brecker.