ACMitchell

I am trying to figure out what to invoice for a piece of music I wrote. A film maker friend brought me in on a project she was working on. The film was unfinished and she really needed music. The finished film would have been 3:30. My original quote to the production team was $100 per minute for finished music, and I would have done two rounds of edits. The production team was aware of this quote, but there was never a formal agreement about this rate. I wrote music for the unfinished film and the producers ditched the film, which included my composition. They are willing to compensate me. It's a matter of me telling them what to pay me. I'd be interested in working with them again, so I feel hesitant to charge my original rate, since they ended up ditching the film and the music. Question is: stick with my rate or charge some type of flat fee, since they didn't use the music?