The Delfonics are an American R&B/soul vocal group from Philadelphia. The Delfonics were most popular in the late 1960s and early 1970s. Their most notable hits include "La-La (Means I Love You)", "Didn't I (Blow Your Mind This Time)", "Break Your Promise", "I'm Sorry", and "Ready or Not Here I Come (Can't Hide from Love)". Their hit songs were primarily written/composed and produced by lead vocalist and founding member William "Poogie" Hart and the musical instrumentation was arranged/conducted by songwriter and producer Thom Bell. 　　Their songs have been used in film soundtracks, including Quentin Tarantino's 1997 movie Jackie Brown, in which "La-La (Means I Love You)" and "Didn't I (Blow Your Mind This Time)" underscore the pivotal relationship between the characters played by Pam Grier and Robert Forster. Their songs "Ready or Not Here I Come (Can't Hide from Love)" and "Funny Feeling" were used in the video game Grand Theft Auto V on the fictional radio station The Lowdown 91.1. 　　Prior to forming the Delfonics, William "Poogie" Hart sang in a variety of groups including Little Hart and The Everglows, the Veltones, the Four Guys, and the Four Gents. Members of some of these early groups included brothers William and Wilbert Hart, Ritchie Daniels, Randy Cain, Stan Lathan, and Donald Cannon, friends who met at Overbrook High School in the 1960s. 　　Circa 1964, William "Poogie" Hart formed a group called The Orphonics, consisting of himself, Randy Cain, Donald Cannon, and Stanley Lathan. Cain soon left the group to attend college, after which William recruited his younger brother Wilbert. Cain later rejoined, Cannon and Lathan left, and the original trio of William Hart, Wilbert Hart, and Randy Cain was at that point born. 　　In 1965, William Hart was working in a barbershop in Philadelphia. A gentleman named Stan Watson came into the barbershop one day, where William, who had written quite a few songs by this point, would sing while playing his guitar. Stan told William that he knew a young arranger/producer for Cameo-Parkway Records named Thom Bell, who was at the time working with Chubby Checker. Stan thereafter introduced William to Thom Bell, and William recalls that the first song he presented to Bell was an original composition of his entitled "He Don't Really Love You".