 On September 26, 1970, Joplin recorded vocals for "Half Moon" and "Cry Baby".The session ended with Joplin, organist Ken Pearson, and drummer Clark Pierson making a special one-minute recording as a birthday gift to John Lennon.Joplin was among several singers who had been contacted by Yoko Ono with a request for a taped greeting for Lennon's 30th birthday, on October 9.