Recording prolifically for Blue Note Records as both leader and sideman, Green performed in the hard bop, soul jazz, bebop, and Latin-tinged idioms throughout his career. Critics Michael Erlewine and Ron Wynn write, "A severely underrated player during his lifetime, Grant Green is one of the great unsung heroes of jazz guitar ... Green's playing is immediately recognizable – perhaps more than any other guitarist." Critic Dave Hunter described his sound as "lithe, loose, slightly bluesy and righteously groovy". He often performed in an organ trio, a small group with an organ and drummer.