David Clayton-Thomas, born David Henry Thomsett on September 13, 1941, in Kingston upon Thames, Surrey, England, is a renowned Canadian musician, singer, and songwriter. He is best known as the lead vocalist of the American band Blood, Sweat & Tears. His early life was marked by a tumultuous relationship with his father, leading him to leave home at fourteen and live on the streets of Toronto, where he frequently encountered legal troubles.

Despite these challenges, Clayton-Thomas discovered his passion for music, teaching himself to play guitar while in a reformatory. Upon his release in 1962, he immersed himself in Toronto's vibrant music scene, initially performing with bands such as The Fabulous Shays and later The Bossmen, which incorporated jazz elements into rock music.

Clayton-Thomas's big break came when he moved to New York City in 1967 and joined Blood, Sweat & Tears. His debut album with the band in 1968 was a massive success, selling 10 million copies and winning five Grammy Awards, including Album of the Year. The album featured hit singles like "You Made Me So Very Happy," "And When I Die," and the iconic "Spinning Wheel," which was later inducted into the Canadian Songwriter's Hall of Fame.

Throughout his career, Clayton-Thomas has been recognized for his contributions to music, including his induction into the Canadian Music Hall of Fame in 1996 and receiving a star on Canada's Walk of Fame in 2010. His journey from a troubled youth to a celebrated artist underscores his resilience and enduring influence in the music industry.