Machine HeadMachine Head toured for approximately 23 years on the strength of The Blackening before getting to work on 2011's Unto The Locust. And with good reason: The Blackening is a modern metal classic, a masterwork of darkness, aggression and precision tempered with humanity and intelligence. And Unto The Locust is no slouch in the 'killer album' department either. Machine Head injected that album with plenty of hooks and songcraft without sacrificing an ounce of the heaviness of its predecessor.

But fans probably won't have to wait as long between albums this time around as they did between Blackening and Locust - the band have already started kicking around ideas for the follow-up.

Singer/guitarist (end Epiphone signature artist) Robb Flynn has revealed on his blog that the band smashed out their first jam session last week to kick around some ideas for the next album. "Dave [McClain, drums], Phil [Demmel, guitar] and I practiced the other day and it was a really productive first jam session," Flynn wrote. "McClain had about five rockin' riffs, Demmel brought in the skeleton of what feels like a great song and I had a few riffs that we rocked on, no full songs, but solid riffs. It felt good, good to be moving on from Locust. Super proud of that record, but it's time to move on, and we're ready to move on. Bring on the future with an open embrace."