Sounds quite interesting once you get past the freaky, Living in my mummy's basement, pocket protector wearing, glasses mended with sellotape computer geek thing

LOL. I actually haven't encountered very many people like that in Second Life. And I think you'll be a bit amazed at how people tend to dress in there. (I wear ice skates pretty much all the time, myself. If you see a wee woman in a jeans skirt and burgundy sweater skating around in the sky, that's me.)

My sister's band is Celticy Folky also (the sister who owns the bar in SL). Here's her band's website...

http://www.keltish.com/Keltish.html

Her band tends to perform in the Dublin sim and the Scotland sim more than in her bar. Maybe you could get gigs in those sims, too.