At some point, a couple of people went downstairs and started fooling around with the karaoke machine. And then the next thing I knew, the whole party was downstairs and singing. And singing. And singing. One guy in the group was very good, another was moderately competent, and the rest ranged from mediocre to abysmal. (I think I set the floor, but one guy would strongly argue that he was worse. We did King of Pain as a duet.)
What is it about karaoke that draws people? Once we started, we just couldn't stop!