The Father's Singing

I didnt see a topic on this and only one other person asked but no one answered. Who did the singing voice for the father in the musical. I have looked at the actor's own IMDB and it doesnt mention he was a singer so I assume he was dubbed. Whoever it was had a fantastic voice that was very broadway sounding. I couldnt find on the credits on IMDB who did the singing. Does anyone know?