Dave "Chico" Ryan, also called Chico Bo-Wico was born David-Allen Ryan on April 9, 1948, in Arlington, Massachusetts. He was in a band called The Happenings, which had hits with "See You in September" and "I Got Rhythm".
Following his departure from that band, Ryan became better known when he joined the musical group Sha Na Na in 1973, on bass and vocals. He appeared with the group on the television show Sha Na Na, which aired from 1978 to 1981, and in the movie Grease, in 1978. On the television show, Ryan often roller-skated and yo-yoed while singing.
Ryan went on to become a member of Bill Haley & His Comets. He died on July 26, 1998 in Boston, Massachusetts, of undisclosed causes.