The Fischer sisters were 15 and 17 years old in 1963; Sally Gordon, also 17, was a friend and neighbor. The Fischers' father was Carl Fischer, composer of standards such as Billie Holliday's "You've Changed" and also "We'll Be Together Again," the latter sung by Frankie Laine. Carl Fischer was also musical director and arranger for Laine for twelve years. Their mother, Terry Sr., sang with the big bands of the day, ultimately becoming the first girl singer with the Stan Kenton Orchestra. Their grandmother and her three sisters played the vaudeville circuit as the Locus Sisters.
Carol and Terry Fischer and Sally Gordon made their first recordings singing on demos produced by Mike Post. A schoolfriend of Terry Fischer's, Post would occasionally have the Fischer sisters and Sally Gordon provide back-up vocals on sessions at Gold Star Studios; it was there Kim Fowley - then in-house record producer at Chattahoochee Records - heard the trio and offered to record them on their own single