Robert “Bobby” Callender never followed trends—he followed visions. A New Yorker with the soul of a seeker, he began his career in the early ’60s with a string of pop singles (including the hit “Little Star”) before evolving into one of psychedelic music’s most enigmatic figures. Fusing jazz, R&B, Indian raga, and spoken-word mysticism, Callender released two cult albums—Rainbow (1968) and The Way (1971)—that sounded more like spiritual transmissions than records. Then, silence. For decades, his trail went cold… until now. Rainbow: The Anniversary Concert, released by Think Like A Key Music, marks his reemergence—an astonishing live performance of his masterpiece, staged more than 50 years after its original release. He didn’t just return—he transcended.