DanAllan.com

I wrote a Beats-per-Minute calculator. Tap any key to a beat and it will display the tempo. It’s a step above other implementations around the web because it shows correct precision and it changes color once it has an accurate reading. Try it!

Moses Lei, a professional musician and fan of Dr. Horrible’s Sing-Along Blog, has posted some excellent (free) transcriptions.  He has full scores and more generally useful Piano/Vocal reductions.

If you have a song stuck in your head and you can’t think what it’s called, just hum a few seconds to this website, which will identify it in seconds.

If you remember the words well enough to sing them, the reliability is even better, but it does really well even if you can only hum ten seconds of the tune!  The service, dubbed Midomi, was launched in January 2007 – not sure why this isn’t better known.

(Thanks for telling me about this, Shawn!)