I want to learn a clasical song for electric guitar with my friend. He's not very good (neither am I, really) so I want it to be pretty easy but still challenging and cool-sounding. Also I'd like one with harmonized parts.

Thanks for any recommendations. I listen to classical quite a bit but most songs I've been interested in learning have either been way to insane or just to simple, so something in between for me and my friend would be nice. Thanks!
Dead soldier! Go now to Valhalla!