Last time, it was in French. This time, it's in English
For those interested, this is actually quite easy to do, at least if you have an IPad and Mac! Just do your drawing in Brushes, send it to your Mac, open with Brushes viewer, create a movie, import into IMovie, slow it down or speed it up depending, add music (IMovie has lots of good pieces), and there you are!
There's also a program called ArtRage for IPad and computer that can capture the drawing process. However, you need to use screen capture software to actually watch it outside of the software.