100% mainstream free, 100% core free, 100% whine free, 95.6% growl free. Nothing but Clean vocals, screaming guitars, ripping basses and thundering drums with a few keys mixed in!! Creativity, Originality, Skill and oh yeah Talent are a huge bonus. Music library is over 38,000 songs and growing. "Metal"= Classic - Heavy - Power - Prog - Speed - Thrash with some Hard Rock and a little Doom thrown in from time to time.