During World War II, he wrote 1942's "Praise the Lord and Pass the Ammunition". Formerly a successful lyricist in collaboration with other composers, this was the first song for which Loesser composed the melody in addition to the lyric. Also during the war, in 1944, he worked on a musical intended to be performed by and for US soldiers abroad, called Hi Yank, the music for which was composed by Alex North.
He wrote the following Broadway musicals:
Some well-known songs he composed for movies and Tin Pan Alley:
He was also the author of "The Ballad of Rodger Young".
2006 saw the release of the PBS documentary, Heart & Soul: The Life and Music of Frank Loesser.