The Delfonics were the quintessential Philadelphia soul singing group, most popular in the late 1960s and early 1970s.

Brothers William and Wilbert Hart formed the group with Richard Daniels, and Randy (Rudy) Cain in high school in the early 1960s. Richard Daniels one of the founding members would be drafted just before the groups first major success.

Soon, they became known throughout the Philadelphia area, signing with Cameo Records. At Cameo, Stan Watson introduced them to the man who made them famous, producer Thom Bell, then working with Chubby Checker. Bell dreamed of creating a Philadelphia version of Motown and struck gold with the Delfonics, whose first album, released on Watson's own Philly Groove record label, featured the hit "La-La (Means I Love You)", in 1968. Four more Bell-produced albums appeared in the next few years: The Sexy Sound of Soul, The Delfonics Super Hits, The Delfonics and Tell Me This Is a Dream. Among the Delfonics' popular hits were "Didn't I (Blow Your Mind This Time)", "For the Love I Give to You", "Ready or Not Here I Come (Can't Hide from Love)" and "Hey Love". Prior to the release of "La-La (Means I Love You)", they had a hit with "He Don't Really Love You" on the small Moonshot label.