In the 1970s, Philly Sound/Philly Soul was similar to Motown, yet also distinct from it — mostly due to its more adventurous harmonies. The Stylistics, one of most popular groups working in the genre, scored 12 R&B top ten hits in a row in the 70s.
This 1971 release changes key twice during the 30-second intro alone (0:14 and 0:28) — pivot modulations aided by colorful compound chords.