The Woodstock Group was a group of musical acts that performed at the 1969 Woodstock Music and Art Fair. Two of the most notable acts were Sha Na Na and Santana. Sha Na Na was an American rock and roll group that formed in 1969 and had a hit single with 'At the Hop'. Santana was a Latin rock band formed in 1967 by Mexican-American guitarist Carlos Santana. They are best known for their hit single 'Evil Ways'.