The First Seven Days is an album recorded by jazz musician Jan Hammer in 1975. It features extensive use of synthesizers, including the synthesized "guitar" parts (as on his follow-up album, Oh Yeah?), with the record jacket stating, "For those concerned: there is no guitar on this album." it is considered one of the pioneering works of acid jazz. Other instruments used are grand piano, electric violin and percussion.It is a musical telling of the Genesis creation story.