One day each month,
a bar near my house does a Disney sing-along night. I went for the first time, expecting it would be some kind of themed karaoke.
This old man shows up at the bar with about twenty questionably-bound books of Disney lyrics. And these books, you guys - I know they must be photocopies, but I swear it looks like he painstakingly hand-lettered every one.
Anyway. We take our seats, and this guy proceeds to play us through the Disney songbook while the entire bar belts out the songs. Everybody.
This is a magical experience. If you can find someone where you live who is willing to play piano for a bunch of nostalgic drunks, you should definitely do it.