Harold Melvin and the Blue Notes was an American R&B and soul group formed in Philadelphia in the late 1950s. The group’s classic lineup included Harold Melvin as the lead vocalist, Teddy Pendergrass, Lloyd Parks, Bernard Wilson, and Lawrence Brown. They achieved significant success in the 1970s, particularly with Teddy Pendergrass as the lead vocalist. Their hits, often produced by Gamble and Huff, include “If You Don’t Know Me by Now,” “The Love I Lost,” and “Wake Up Everybody.” Harold Melvin and the Blue Notes are recognized for their smooth harmonies and emotionally charged ballads, making them influential figures in the Philadelphia soul sound. Teddy Pendergrass’s distinctive and powerful voice became a hallmark of the group. Despite lineup changes and the departure of Pendergrass for a solo career, the group’s impact on soul and R&B music remains significant.