Altered States was Richard and Robert Foster's 1st library album collaboration. They took an old grand piano into Air-Edel studios, Plucked it, scraped it and dropped the iron doorstopper on it! This sampling session formed the basis for Altered States and to the weird soundscapes they had created, they added cello, electric cello, guitar and various other acoustic sound sources, which were then heavily treated with digital FX.
