Evile is a thrash metal band from England. They are considered a part of the "Thrash Revival" of recent years. They were featured in Rock Band via the song "Thrasher", which is a downloadable track, and is one of, if not the, hardest song in Rock Band history.
Evile has released their entire album "Infected Nations" on the Rock Band Network. All of the songs are considered extremely difficult on guitar due to, in part, their extreme solos and lackluster charting (which is considered "too realistic").