 | Billy Butler Plays Via Galactica (Via Galactica) | 1973 | Billy Butler | Conductor | |
 | Broadway Magic: 1968-1980 | N/A | Compilation | Music | |
 | Broadway: The American Musical | 2004 | Compilation | Conductor | |
 | DisinHAIRited (Hair) | 1969 | Original Cast members | Conductor, Music, Performer | |
 | Don Kirshner Cuts Hair (Hair) | 1969 | Don Kirshner | Music | |
 | An Evening with Cleo Laine | 1972-03-17 | Cleo Laine | Music | |
 | Finishing the Act | 1999 | Craig Rubano | Music | |
 | Fresh Hair (Hair) | 1970 | Original London Cast Members | Music | |
 | From Stage to Screen | 2000 | Caroline O'Connor | Orchestrations | |
 | Hair | 1967 | Off-Off-Broadway Cast | Music | |
 | Hair | 1968 | Original Broadway Cast | Conductor, Music | |
 | Hair | 1968 | Galt Macdermot's First Natural Hair Band | Music, Producer | |
 | Hair | 1968 | Original London Cast | Music | |
 | Hair | 1968 | Mexican Cast | Music | |
 | Hair | 1969 | Brasilian Cast | Music | |
 | Hair | 1969 | Australian Cast | Music | |
 | Hair | 1970 | Netherlands Cast | Music | |
 | Hair | 1971 | Argentinian Cast | Music | |
 | Hair | 1971 | Japanese Cast | Music | |
 | Hair | 1979 | Film Soundtrack | Conductor, Music | |
 | Hair | 1991 | Studio Cast | Music | |
 | Hair | 1992 | Australian Cast | Music | |
 | Hair | 1992 | Broadway Musical Company | Music | |
 | Hair | 1995 | Studio Cast | Music | |
 | Hair | 1998 | Studio Cast | Orchestrations | |
 | Hair | 2001 | Vienna Cast | Music | |
 | Hair Cuts (Hair) | 1969 | Instrumental Album | Performer | |
 | Hair Goes Latin (Hair) | 1969 | Studio Cast | Music | |
 | Hair Rave-up (Hair) | 1968 | Original London Cast | Music | |
 | Hair Today (Hair) | 1990 | Galt MacDermot | Music, Performer | |
 | The Human Comedy | 1984 | Original Broadway Cast | Conductor, Music, Music_Director | |
 | Isabel's a Jezebel | 1970 | Original London Cast | Music | |
 | Joanna Ampil | 2007 | Joanna Ampil | Music, Orchestrations | |
 | Johnny Farnham Sings the Shows | 1972 | Johnny Farnham | Music, Music | |
 | The Joker Of Seville | 1974 | Trinidad Cast | Music | |
 | The Karl Marx Play | 1973 | Original Cast members | Conductor | |
 | The Legend Of Joan Of Arc | 1997 | New York Concert Cast | Conductor, Music | |
 | A Piece of Sky | 2003 | Sean McDermott | Music, Orchestrations | |
 | Reflections of a Radically Right Wing Composer | 1992 | Instrumental album | Liner_Notes, Music, Orchestrations, Performer, Producer | |
 | Salome Bey Sing Songs From Dude (Dude) | 1972 | Original Cast Members | Conductor | |
 | Seasons Of Love | 2006 | All-Music | Music | |
 | So Far... | 2002 | Susan Egan | Music, Orchestrations | |
 | Stages | 1983 | Elaine Paige | Music | |
 | Two Gentlemen of Verona | 1971 | Original Broadway Cast | Music, Producer | |
 | Two Gentlemen of Verona | 1973 | Original London Cast | Music | |
 | Wonderful Showsongs | 1971 | Paul Christian And The Sound Of Broadway | Music | |
