Crabby Appleton was an American rock band that was active in the late 1960s and early 1970s. The band's music, led by singer-songwriter Michael Fennelly, was characterized by a blend of hard rock, folk, and pop, producing a unique sound that distinguished them in the era of classic rock. They are best known for their single "Go Back," which reached the top 40 of the Billboard Hot 100 in 1970. Despite their brief existence, Crabby Appleton made a significant impact on the rock music scene, especially for their fusion of different musical styles.