Were can i find the song chang was playing when he was playing himself out Or is that a real song?

Fell out of my chair.. love chang

I also love Chang. I laughed so hard when that scene first started and I thought they actually killed his character. I laughed twice as hard when he then walked in. As for the song, a quick search yielded some results.

Here and here. You can probably use a program or browser add-on to download them. Hope that helped.