In the performance of the song "To Be Lovers", Keith is lip synching to the voice of one of the studio singers, with the exception of a short portion of the song where the voice noticeably changes to that of David Cassidy.
Danny: What do you want a new wall for?
Keith: So I don't have to listen to anymore of your great ideas.
Danny: But I'm the best thing that ever happened to you.
Keith: I'd rather have acne.
Danny: We could be a great song writing team.
Keith: I want a new wall.
Danny: We could be bigger than Lennon/McCartney!
song: "To Be Lovers" from "The Partridge Family Album"
Early in the episode, Keith makes a joke about Danny being influenced by the film "Myra Breckinridge". That controversial film, released earlier that year and starring Raquel Welch as a transexual, has been called one of the worst films of all time.