Bobby Caldwell is a legendary smooth jazz and R&B vocalist and keyboardist best known for his timeless 1978 hit "What You Won't Do for Love," which has become a staple of soul and jazz radio. With his silky voice and sophisticated musical style, Caldwell has influenced generations of artists across multiple genres since his debut in the 1970s. His catalog of soulful ballads and uplifting tracks continues to resonate with fans worldwide, cementing his status as a true icon of smooth soul music.