VideoScribe - Make your own whiteboard video animations with Sparkol VideoScribe – award-winning video scribing app for PC, Mac and iPad. Free trial available.
tonestro - Practice & improve on your wind instrument while having fun
TTS Sketch Maker - Create amazing whiteboard sketch videos with text-to-speech human-sounding voices in minutes!
Flat - Online collaborative music score and tab editor, accessible from any device
Doodly - Create your own doodle video in just 60 seconds
Transposr - A free and simple way to transpose your sheet music or MP3.