Bob Gaudio

Bob Gaudio is an American songwriter, singer, musician, and record producer, and the keyboardist and backing vocalist of the pop/rock band the Four Seasons. Gaudio wrote or co-wrote and produced the vast majority of the band's music, including hits like "Sherry" and "December, 1963 (Oh, What a Night)". Though he no longer performs with the group, Gaudio and lead singer Frankie Valli remain co-owners of the Four Seasons brand.

He appears as a character in the musical Jersey Boys.