Traffic appeared amidst the late-1960s psychedelic scene, and at its height the band was one of the most adventurous outfits around, although Traffic's unstable lineup made it an on-again, off-again affair by the '70s. Teenage wunderkind Stevie Winwood was the main man, but all the members made significant contributions. With a sound that combined influences from folk, rock, jazz, and soul, Traffic created something wonderfully of its time.