The Little Shop of Horrors AIP distributed the film as the B movie for their release of Mario Bava's "Black Sunday". Despite being barely mentioned in advertising (it was only occasionally referred to as an "Added Attraction" to Bava's film), "Black Sunday"'s critical and commercial success resulted in positive word of mouth responses to "The Little Shop of Horrors". The film was re-released again the following year in a double feature with "Last Woman on Earth". Because Corman did not believe that "The Little Shop of Horrors" had much financial prospect after its initial theatrical run, he did not bother to copyright it, resulting in
The Little Shop of Horrors was called upon to write music for Corman, Katz sold the same score as if it were new music. The score was used in a total of seven films, including "The Wasp Woman" and "Creature from the Haunted Sea". Katz explained that his music for the film was created by a music editor piecing together selections from other soundtracks that he had produced for Corman. Howard R. Cohen learned from Charles B. Griffith that when the film was being edited, "there was a point where two scenes would not cut together. It was just a visual jolt, and it didn't