Enjoyable! (I've always thought that composing and coding have a <i>lot</i> in common. Even bugs!)<p>Chopin's not in the signatures list (today), but he's well-represented in one reference there that dives into lots of "Extremes of Conventional Music Notation". [0] (Unpacking that stuff makes life more 'interesting' for students!)<p>[0] <a href="http://homes.sice.indiana.edu/donbyrd/CMNExtremes.htm" rel="nofollow">http://homes.sice.indiana.edu/donbyrd/CMNExtremes.htm</a>