For future reference if you don't want your tunes removed you can use a program called Audacity to lower your tunes pitch by 1/2 step.
This way youtube cannot match or identify your music and slap you with copyright bull****.

You can find Autacity here http://audacity.sourceforge.net/
I've used it many times.....it works like a charm

Just make sure you change the pitch without changing the tempo.