Francesco Stephen Castelluccio, better known by his stage name Frankie Valli, is an American singer, known as the frontman of The Four Seasons beginning in 1960. He is known for his unusually powerful lead falsetto voice.

Frankie Valli and The Four Seasons performing at the U.S. Capitol Fourth of July 2014 concert. Songs include Grease, Can't Take My Eyes Off You, and Let's Hang On.

From their 2002 Greatest Hits album "The Very Best Of".

VoicePlay A Cappella Medley