Song from movie School of Rock?

Question

When Jack Black's character asks the boy to demonstrate his skills on the electric guitar, he plays something. Then later, he plays Smoke on Water. What was he playing before Smoke on Water. Or was it the same song?

Answer 1

Iron Man from Black Sabbath.

Then Smoke on the Water

Then they played Highway to Hell from AC/DC

Answer 2

I agree that the song before Deep Purple is Iron Man by the Sabbath

Answer 3

Seems like it was something by Led Zeppelin or AC/DC. I can't remember, haven't watched the film in a while.