It is a slight modification of a stopwatch (from the samples), to make it show lyrics for karaoke. You can add more songs in InitSongs class with their lyrics and time that they should appear on a screen.
If you want to try it, test lyrics are for that video - https://www.youtube.com/watch?v=M4H8zXwVbVE
#####Below few screens to show how it looks:
Count down screen (3 sec. to get you prepareted for singing).
Title of song to sing (and author).
Menu, no changes here.
Lyrics line, nothing fancy here as well.