Which Teddy sang lead vocals with Harold Melvin and The Blue Notes?

Teddy Pendergrass sang lead vocals with Harold Melvin and the Blue Notes. He joined the group in the early 1970s and contributed to their success with hits like "If You Don't Know Me by Now" and "Wake Up Everybody." Pendergrass's powerful and soulful voice became a defining feature of the group's sound during his tenure. He later enjoyed a successful solo career after leaving the group.