Slashed

Slashed is a low budget independent horror film, financed and directed by Ash and written by Jed Shepherd. The film was shot in 2002, purely on a video camcorder when Ash were on tour in the United States supporting Coldplay who subsequently appeared in the movie as detectives, along with various other musicians who the band ran into on their tour, including Dave Grohl, Moby and Neil Hannon.

The movie features a predominantly musician based cast, with cameos from members of The Hives and The Vines.The narrative is presented as a tour diary for the Northern Irish rock band Ash, but soon reveals itself to be a gorefest. The film features many famous musicians and actors, some playing themselves while others playing specially written characters. The initial idea was given to Shepherd to write a short slasher film for use on the DVD side of the 2002 single release Envy. The film was anticipated by the tabloid and music press but had never officially been released. ........

Source: Wikipedia