Oh sure, Sunday in the Park is a feel good musical in a slit-your-wrist kind of way. But to each their own.

Absolutely brilliant, but definitely not one of my feel goods.
Curtains, on the other hand, never fails to make me smile no matter what kind of mood I'm in. Definitely a feel good musical.
"This table, he is over one hundred years old. If I could, I would take an old gramophone needle and run it along the surface of the wood. To hear the music of the voices. All that was said." - Doug Wright, I Am My Own Wife