This thread was a bit before my time, so I never saw it before...very interesting! I've always sung second alto in chorus- I love those low harmonies! I've been tacked on to a few tenor parts when we were short of guys, and on to a few mezzo soprano parts when we were short of mezzos. I used to think there were notes I would never be able to hit...then, when I tried resinging a piece we did in ninth grade, there were notes that I could hit that I couldn't before. Practice and the willingness to stretch definitely improve range. So I've learned never to say that I can't sing something...it's always worth a try.