The Delfonics are a pioneering Philadelphia soul singing group, 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 all written by songwriter and producer Thom Bell and lead vocalist and founder William Hart.

Their songs have been used extensively 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" underscore the pivotal relationship between the characters played by Pam Grier and Robert Forster.