Singer Frankie Valli and the Four Seasons, who helped bridge '50s doo-wop and '60s rock 'n' roll, are celebrated in a new four-CD box set called Jersey Beat. The group released two dozen Top 40 hits, including "Big Girls Don't Cry," "Sherry" and "Walk Like a Man." Jersey Boys, the Tony Award winning Broadway musical, is based on the lives of the Four Seasons.