Marvin Gaye and Tammi Terrell were an American vocal duo most prominent in the late 1960s. They were known for their powerful soul and R&B performances, which often incorporated elements of pop and gospel. The duo's music was characterized by Gaye's smooth baritone and Terrell's emotive soprano, creating a unique harmony that brought a fresh dynamic to Motown Records. Their most influential works include "Ain't No Mountain High Enough" and "You're All I Need to Get By", which have become significant contributions to the soul music canon.