Around 1948 his film-scoring career began when he was hired by MGM to write orchestral arrangements. He worked extensively in film music, and his credits as a composer/arranger included Funny Face, Guys and Dolls, Showboat, The Americanization of Emily, The Pleasure Seekers, Yes, Giorgio, Doctor Dolittle (1967), My Fair Lady (1964), and Superman (1976). He had numerous Academy Awards nominations. A partial listing of the vast number of TV series scores he composed and/or arranged include Wagon Train, Peyton Place, Daniel Boone, The Waltons, Land of the Giants, and Lost in Space, among others. Courage was an early member of the Composers and Lyricists Guild of America and various other organizations. Some of Courage's catalog is available on CDs from GNP Crescendo: Star Trek: Original Television Soundtrack (The Cage, Where No Man Has Gone Before) (1989), Star Trek: Original Television Soundtrack, Vol. 3 (Shore Leave, The Naked Time) (1992), and The Fantasy Worlds of Irwin Allen (1995). Other CDs that feature Courage's music are Rhino's 1997 CDs Academy Award-Winning Music From M-G-M Classics and That's Entertainment: The Best of the M-G-M Musicals; the 1967 movie soundtrack to Doctor Dolittle issued as a 1997 UNI/Verve CD; Leonard Bernstein: Greatest Hits; Gershwin Fantasy; a 1998 Sony Classics CD featuring Joshua Bell, John Williams, and the London Symphony Orchestra; the Executive Decision movie soundtrack from UNI/Varese Sarabande; Muppets From Space; Jessye Norman Collection; John Williams/Boston Pops Salute to America; First Knight; and Inside Star Trek. For instrumentalists, there's the book Complete Star Trek Theme Music.