Machine Head are back in full touring mode as they're headlining the Jagermeister Stage on the 2013 Rockstar Energy Drink Mayhem Festival this summer. Frontman Robb Flynn, realizing it had been a while since posted, delivered a full synopsis of the hectic weeks leading up to their 2013 Mayhem debut.

In his missive, appropriately titled "The Heat Is On," Flynn not only described the high temperature performances they've been running into lately but also the extra pressure they've felt getting their footing in recent weeks.

Flynn says, "Amongst the things I've been doing include: finalizing an entire line of new merchandise, finalizing an entirely new stage set, getting the full headline set and rehearsals in, showing [new bassist] Jared [MacEachern] the little nuances of Machine Head songs, trying to remember all the things I need to take on a summer tour after having six months off, layering in parts and vocals for the still unfinished demo we have and squeezing in being a dad and husband somewhere in there, and in all honesty probably not doing a very good job of it."

Machine Head got back into touring mode with a handful of dates just ahead of Mayhem. Flynn says that things got off to a bumpy start, with their bus breaking down in Oregon on the way to Spokane, but once they arrived, it was pure insanity. He adds, "Not only was this the first warm-up show after a six-month break, but we were playing our first show with the new guy, Jared MacEachern. So right off the bat he gets his first taste of chaos of being in Machine Head."

As for Mayhem, Flynn admits there was some last minute rushing there as well as they planned to have their Machine Head Flag standards ready to go by opening day, but when they arrived only one of 12 was good to go. But everything turned out great in the end, as they re-thought some designs and had Suicide Silence's Mark Heylmun come help them out.

He adds, "I'm not one to brag and I'll be the first to admit if we played like s---, but man, we KILLED it that first day. It was such a good feeling to know all the preparation, all the work leading up to this, to see it all come to life -- the stage, the merch, the banners, the flag standards. It was f---ing epic. I was really proud of us for pulling it off."

Machine Head will be seen all summer long on the 2013 Mayhem Festival. To read Flynn's full update, click here.