I used to backing vocals for a local band a few years back, i was good mates with the drummer, i suppose i was kind of what would be regarded of a 'roady' for a couple of years.
Over time, i used to get dragged up to do one song as lead vocalist, usually at the end of the night, or if not, before the interval.
This was about 2002/2003 ish tho, so i had no such camera phone that could do anything other than a blocky pixellated mess with washy sound at the time, so anything i had got recorded was binned.