I'll sing as long as I can because I enjoy doing that. I enjoy the fans and what I do. I love the traveling and the hotels and just seeing the world over and over again.
If you want good sketches, go pick up Sid Caesar. The best of Your Show of Shows. That's the greatest sketch comedy you'll ever see on television.
I like it when songs develop in some way. Four minutes usually isn't enough time for something to develop musically.