Jan an Dean were a rock and roll duo, popular from the late 1950s through the mid 1960s, consisting of William Jan Berry (3 April 1941 – 26 March 2004) and Dean Ormsby Torrence (born 10 March 1940). Although Jan & Dean pre-dated The Beach Boys, they became most famously associated with the vocal "surf music" craze inspired by The Beach Boys.