I actually did this once at choir practice. I can't remember what the song was, but the director said I was playing it too "fancy," and he couldn't figure out where to come in. I don't know what got into me, but I began playing a one-finger melody with my right index finger. The pastor burst out laughing and said, "She did it just like on Snoopy!" Anyway, enjoy!

[youtube https://www.youtube.com/watch?v=ie0lJ1QCHZ4&hl=en_US&fs=1&&w=320&h=265]