Teeth · Soft Machine Fourth ℗ 1971 SONY BMG MUSIC ENTERTAINMENT (UK) LIMITED Released on: 1971-02-17 Bass Guitar: Hugh Hopper Organ, Piano, Composer, Lyricist: Mike Ratledge Executive Producer: Sean Murphy Drums: Robert Wyatt Engineer: George Chkiantz Trombone: Nick Evans Cornet: Mark Charig Bass, Clarinet, Flute: Jimmy Hastings Alto Saxophone, Saxophone: Elton Dean Tenor Saxophone: Alan Skidmore