Robt Ptak (born October 13, 1970) is an American rock singer-songwriter, guitarist, bassist, and record producer who is the co-founding member and bassist/backing vocalist for 1990s pop punk band Size 14.
Robt Ptak (born October 13, 1970) is an American rock singer-songwriter, guitarist, bassist, and record producer who is the co-founding member and bassist/backing vocalist for 1990s pop punk band Size 14.