I'd be perfectly happy serenading my partners...and they would (and have) covered their ears and run from the room - because I am completely tone-deaf (of the "Poor Johnny One-Note" and "couldn't carry a tune in a bucket" variety), which doesn't stop me in the slightest.
From the other side, I love being serenaded - doesn't matter if it is good, bad, or ugly. To have someone's attention to the point where they throw caution to the wind and just put it all out there? Whether for just me or a crowd....Hell, yeah! Fuck yes!