Mastodon has been more blessed than curse -- during its career in general, and since the release of its latest album, "Emperor Of Sand," in particular.The heavy rocking Atlanta quintet won a Grammy Award for Best Metal Performance for "Sultan's Curse," the albums opening track. That follows a Top 10 debut on the Billboard 200 chart and rave reviews -- including being named the Top Metal Album of 2017 by Metal Hammer magazine and Top 10 mentions in several other publications.