Three of the leading gear/technology companies for both musicians and consumers alike are returning with their successful Metal Masters clinic series. Partnering up with Guitar Center, Metal Masters 4 will take place in New York City on September 7th at The Gramercy. Doors will open at 7:00PM with the clinic starting at 8:00PM. Metal Masters 4 is bringing back some of the classic “Metal Masters” while adding a few new members to the list. As always, fans can expect some surprise appearances and unforgettable performances. Metal Masters 4 will be comprised of Philip Anselmo (Pantera/Down), Kerry King (Slayer), Dave Lombardo (Slayer), Scott Ian (Anthrax), Charlie Benante (Anthrax), Frank Bello (Anthrax) and newly added masters Billy Sheehan and Gary Holt (Exodus/Slayer).