Metallica kicked off the US leg of its M72 World Tour in New Jersey's MetLife Stadium last weekend, Aug 4 & 6.

In keeping with its no-repeat weekend, the metal legends played two entirely different sets at the 82,000 capacity football stadium that's home to the NY Giants and NJ Jets in the NFL.

Being able to start a fresh setlist the following night allows a band with an expansive catalogue and a brand new album a chance to play some never-before-heard new tunes and a few deep cuts.

Friday the quartet live debuted “Shadows Follow” and Sunday “Too Far Gone?” was rocked for the first time.

Both jams are from the new 72 Seasons which was fairly represented in the weekend sets.

Despite members of the band approaching (or just entering) their 60s, the new music they are making is just as fast, just as powerful, and just as metal as ever, so why not feed the kids the fresh meat?

Likewise when your 60 year-old frontman can shred like this, seemingly effortlessly, on "The Day That Never Comes," from 2008's Death Magnetic, you let that gray haired man rock.

One bit of levity came when lead guitarist Kirk Hammett just couldn't get the intro right of "Nothing Else Matters," and asks for a do-over. Proof that after 40 years, this is a live band through and through and mistakes like these are bound to happen. Just don't call it a senior moment. Kirk's only 60.

Opening the show were Pantera and Wolfgang Van Halen's Mammoth who will continue with them into Canada and the west.

Not seen on this list above is their special show in Indio, CA, where they will be the closing act of Power Trip on October 8 at the Empire Polo Fields.

Tickets to M72 and PowerTrip are available at the Metallica website.

Don't be late, when you hear the bagpipes of AC/DC's "It's A Long Way To the Top," you know the show is about to start.