I would think Autoharp Joke would be the epitome of redundancy, but I'm told they sound great if you turn them over and clog on them. Also (and this also works for hammer dulcimers) when an autoharp player comes to a session and tunes one string to everybody else, then walks away to tune the rest, it's cruel but justifiable for everybody to tune up or down a hair so that the harp player comes back and is still out of tune.