As for you, MthGM--check this One person rap with pencils, then try to do it yourself. If you have trouble recreating the sound (particularly that repeating snap sound), it's because you haven't mastered the technique for producing the sound--

Ted - I didn't say it wasn't a technique; but it's a pencil-tap technique, & doing it on top of a piano would still be a pencil-tap technique, NOT a piano technique, wouldn't it?????