Musical Monday #246

In this episode, Martin begins to suspect that his sons are not his biological children (spoiler, turns out they are).

I Am The Very Model Of A Modern Major-General and On A Tree By A River (Willow, Tit-Willow) from Frasier, episode Fathers And Sons

Performed by Kelsey Grammer, David Hyde Pierce, David Ogden Stiers and John Mahoney 

Written by Arthur Sullivan and W. S. Gilbert