Many of the guys I've played soccer with over the years are of the uber-talented type: good at sport, good at arts, good academically. One of them in particular is involved with a choral group called The Australian Voices, and he sent me a link to the video of their latest work.
It's a choral arrangement of about 30 pop songs in one big mash-up. I only recognised one song (an 80s throwback included near the end for giggles) but it's still very good choral work and pretty funny too.
Have a look at it here: http://www.theaustralianvoices.com/trash-mash