Yes. Most likely it would become a metamorphic rock of higher grade. Slate is a low grade metamorphic rock. With increased heat and pressure it will become schist, a high grade metamorphic rock.
heat and presure
Gneiss
It gets under a lot of pressure underground and then changes. Metamorphic just means changing.
YES.
Guitar Hero: Warriors of Rock Trailer
Green Day: Rock Band Review
How to Mod Your Rock Band Guitar
Guitar Hero: Warriors of Rock Set List Act 2 Trailer