He actually was in a band called Rogues Gallery that my dad ran sound for that my mom sang in from time to time. Don't believe me? I have a picture.
On the left is my mom singing Heartbreaker by Pat Benatar, and on the right is Pat Monahan in 1991
This is but one of my many tiny claims to fame. Ah who am I kidding, I wasn't even born for another 2 years after this was taken.
Fun fact, Pat used to be really good at singing Led Zeppelin and Guns N' Roses. So much so that the bands final set of the night was almost all Led Zeppelin songs.