Well because my choir was just a shitty wee school/ church choir the instructor just kind of said ALL OF YOU SING! Didn't put us as sop or alto so it was pretty shit but I liked it :3 I did get to do the descant part sometimes though, and some of us got chosen to perform at the Royal Concert Hall once at Christmas. Aw I kind of miss it now :P
You should hear the choir now. I left it after I finished primary school and the new girls in it are just awful! My teacher asked me and my friends to come back XD xxx