Medeski Martin & Wood, or MMW, is a jazz trio originally formed in Brooklyn, NY in 1991, consisting of John Medeski on keyboards, Billy Martin on drums and percussion, and Chris Wood on double bass and bass guitar. Medeski Martin & Wood was initially a straightforward acoustic jazz trio, but Medeski quickly added a Hammond organ when the difficulties of touring with a piano became apparent. This more soul jazz oriented direction led to the incorporation of other musical genres, including funk, hip hop, trip hop and free jazz.