Twitter really is a source of endless delight for me. World-famous composer (and Sibelius user) Steve Reich recently joined Twitter. Today, he posted the following tweet:
Clapping music score http://i29.tinypic.com/4kv5lu.jpg
Here’s a small version of the manuscript for that famous 1972 composition:

Follow @SteveReich for more updates from the great man.
Update 2004-04-30:
So it turns out, perhaps unsurprisingly, that @SteveReich is not in fact the real Steve Reich. Still, that really is Clapping Music, but I may well need to take it down if it was not posted by the man himself.