I've applied for music-highschool next year, and in about a month, they are going to listen to me play to decide if I'm a candidate or not.

I will play one piano piece (Not sure which yet, so suggestions on that are appreciated too) and one electric guitar piece. Have any suggestion to a challenging, but possible guitar piece that will help me land a spot in that school? Preferably something that doesn't require two guitars to sound allright.

And should I maybe play one of my own songs? I always write harmonyriffs and chorus's with two guitars, but atleast I would show that I can write music myself, too.