I can not speak for anyone else, but if you want to play a musical insturment near me my reaction will depend on many things.
1: Are you any good at it?
2: Drumbs, Bagpipes, Guitar, Acordian, Piano (elctronic of course) Violen, Flute, Whatever.
3: Style of music (Actually that's about 30 on a list of 3, meaning "so long as it's music it's good)
Now.. I might ask to sing along.