sentences:  In 2001 and 2002, Apollyon Sun made further soundtrack contributions for the BBC, among them music for the high profile TV production "Red Cap" with Tamzin Outwaithe.Unala and Fischer also participated in former Nirvana drummer Dave Grohl's (Foo Fighters) "Probot" album project.Co-written by Grohl, Fischer and Unala, the resulting song "Big Sky" features Fischer on vocals and Unala on guitars.