The Chambers Brothers are an American soul band, known for their infusion of psychedelic rock and gospel influences. Formed in 1954, the band comprised brothers George, Lester, Willie, and Joe Chambers, along with drummer Brian Keenan. They gained prominence in the 1960s with their signature eleven-minute song, "Time Has Come Today", known for its distinctive psychedelic effects and cowbell rhythm. The Chambers Brothers' fusion of genres was innovative for its time, and they played a significant role in the development of psychedelic soul.