The Four Perfections were an American soul group known for their expressive harmonies and rhythmic melodies. They were active during the mid-1960s, contributing to the Philadelphia soul scene. Although their discography is rather limited, their single "I'm Not Strong Enough" has grown into a Northern Soul classic since its release in 1965. Despite their brief existence, The Four Perfections hold a significant place in the history of soul music for their distinctive sound and enduring influence.