Blood, Sweat & Tears is an American rock band known for its fusion of rock, blues, pop music, horn arrangements, and jazz improvisation. Formed in 1967, their most notable lineup included vocalist David Clayton-Thomas and founder Al Kooper. The band achieved significant success with their second album, "Blood, Sweat & Tears" (1968), which earned them a Grammy for Album of the Year and included hit singles like "You've Made Me So Very Happy." Their innovative blend of styles remains influential, contributing to the development of jazz-rock fusion.