Apparently, David used to enjoy singing “Teen Angel” with some friends many years ago at conventions, just for fun. Then people started to request it, which was okay for a while, but he hadn’t really intended to do this all the time. So he announced he would sing it only once per con, only at 3 am, wherever he was. Only to have, as he says “about 120 Japanese fans show up with cameras” at a party where he was about to begin. Enough was enough, and he retired–but he still knows all the verses. . .