If I Should Lose You is a 1936 song written by Ralph Rainger with lyrics by Leo Robin. It was introduced in the Paramount film Rose of the Rancho in 1936, where it was used to underscore an emotional moment and has since become a jazz and pop standard. The tune, originally in A minor and often played in various keys, has long served as a vehicle for improvisation in swing and jazz. Notable recordings include Dinah Washington on Tears and Laughter (1962), Julie London on Sophisticated Lady (1962), Hank Mobley on Soul Station (1960), Grant Green on Born to Be Blue (1962), Chet Baker on Diane (1985), Nina Simone on A Single Woman (1993), Aretha Franklin on Unforgettable: A Tribute to Dinah Washington (1964), and Frank Sinatra on L.A. Is My Lady (1984).
