If I may ...
Just trying to find an original modern day, (today), rock band is nearly impossible, if one exists at all. No bands today write their own music, harmonize it, and play the required instruments. Plenty of wanna be "tribute" bands stringing for a weekend. As far as any Metallica style goes, and the likes of Megadeth, Judas Priest, Black Sabbath, Motörhead, Mötley Crüe, hell even the likes of Van Halen, Boston, Led Zeppelin and AC/DC, will probably never hear or see anyone comparable ever again. The major record houses have seen to that. And with autotune, stage performances, choreographed routines and tight reveling wardrobes, they've pretty much enslaved the youth of resent history and of today, to fork over their money to watch and listen to mediocre "talent" picked from mostly well healed and chosen families.