Morton Stevens, who plays Eadie Jordan's drummer (and a heroin addict) in this episode, was the series' main composer. Among the many compositions that Stevens wrote for the series was its legendary main theme music.
Harry Partch was the name of an actual musician and composer who was active during the 1950s and 1960s. His music was in the Avant-Garde/Experimental genre and was also the inventor of many exotic musical instruments.