Mastodon Explain the Origins of Their Prehistoric Namesake, Free Hoobstank + More

Want to learn everything you need to know about those extinct woolly beasts known as Mastodons, like why they can't play guitar, what they are heavier than (Led Zeppelin II) and how a part of their anatomy (the tusks) helped to improve primitive man's sex life? Well, Troy Sanders, the frontman and bassist for the band Mastodon, offers up an educational video lesson on the creatures. Watch it now! [Fuse]

Hoobastank – yes, they're back- have shared the lyric video for their new single "This Is Gonna Hurt," the new single from Fight or Flight, which drops this summer. Check it out, learn the lyrics and succumb to both the riffy, melodic goodness. The song is also available for free download at the band's website. So if you like what you hear, nab it for the best possible price: free. That's always a good thing. [Hoobastank][YouTube]

Limp Bizkit frontman Fred Durst joined Steel Panther on stage last night (May 7) for a rendition of The Kinks classic "You Really Got Me" and there's video footage to prove it. [Blabbermouth]

Polar Bear Club and lifestyle brand Airwalk are partnering up. The band will wear Airwalk kicks and be featured in the music portions of the company's annual ads. To celebrate their newfound relationship, the band is offering a free download of 'Close Knit. It's available for the next two weeks, so nab it. It's cool and it's free. Can't beat that. [Airwalk]

P.O.D. revealed the cover for Murdered Love, which drops July 10 via Razor & Tie. It's a futuristic image, featuring one alien holding the listless body of another. It's certainly striking. We can't wait to hear the entire soundtrack that goes along with it. The first single "Lost in Forever" is available now. [Blabbermouth]