According to Beausoleil, the agreement that he made with Anger was that, in exchange for his agreement to star in the film, the filmmaker would provide for the young musician's basic needs and would allow him to live at the Embassy, but that he would not be paid for appearing in the film. While staying in Anger's flat, Beausoleil read up on mythology and Thelema from Anger's private library, although he felt that there was tension between them as a result of their different sexualities. Anger was strictly homosexual while Beausoleil was strictly heterosexual, with the latter opining that Anger "kind of resented the girlfriends I had over, but I wouldn't let that stop me – I was young." Beausoleil served as Anger's chauffeur during this period, and together they attended counter-cultural events such as the Human Be-In at Golden Gate Park in January 1967. During their early conversations, Beausoleil suggested that he could also compose a soundtrack for the film, assembling a band to be known as the Magick Powerhouse of Oz in order to do so, largely out of jazz musicians. Anger agreed to the collaboration.