Please help with the soundtrack

The songs were Mac the Knife and I painted this sign. I'll look and see who sings them, because I know Mac was a cover, not sure about the other.

Michael Hurley wrote the song that plays at the end of the movie. I do not recall who wrote the music within the film. I particularly love the haunting music that accompanies the discovery of David's body at the end. Jimmie Dale Gilmore is the artist singing the classic Mac the Knife at the beginning of the film. Michael Hurley has at least one CD out, search his name.