Hi All!
I've finished the Keyboard Karaoke, an application to learn to type faster and have fun with your favourite songs. Here a blog entry where you can find some screenshots and the link to the github repo http://edapx.com/2015/11/03/keyboard-karaoke/
I've used some glitchy effect that is not visible on the low quality version of this video, see the video on the vimeo webiste, and click on "HD".