In the flashback part Bette is wearing a gray sweatshirt with one shoulder showing, a nod to her flashdance role
The music that plays when Alice and Uta make love is the theme music from Vampyros Lesbos (1971), a notorious erotic horror film from the early 70's, but is probably more recognizable when Quentin Tarantino used it in Jackie Brown (starring one of this show's stars, Pam Grier).