Two is fussy and three is just downright Baroque. Here's some proof by Ellas McDaniel -- a.k.a. Bo Diddley -- Mister Diddley. His name was appropriately taken from the one-stringed (one-note) African instrument, the diddley bow. Thanks C-Monster.
The above was posted five days before Bo Diddley's death, June 2, 2008. He was not just a giant of rock n roll, he was a major American artist - a consummate innovator who pushed the form to the edge of pure rhythmic sound. Among his most distinguished peers, he was the avant garde -- his contribution is absolutely unique.