Listen to Someday Sweetheart online. Someday Sweetheart is an English language song and is sung by Teddy Wilson, Benny Goodman Trio, Benny Goodman and Gene Krupa. Someday Sweetheart, from the album After You've Gone:The Original Benny Goodman Trio And Quartet, was released in the year 1987. The duration of the song is 2:46. Download English songs online from JioSaavn.