A few weeks back, we'd just finished our soundcheck then the sound guy started playing some music through the PA.
We'd recently been doing some demos at my place, so when one of our songs came on, I thought "how the hell did he get hold of that?"
as only our singer had access to our demos, but it sounded great. When I asked the sound guy, he said it was what we'd just played in the soundcheck, stereo straight into his laptop! He did the whole gig later, but his hard drive died before the next time we played there
I guess I wont ever know if it was just hearing it loud through the PA that made it sound that good...