Exclusive: Watch Footage Of 30 Seconds To Mars' Fans-Only 'Summit'

Video shows Jared Leto and company leading the audience through a variety of audio experiments.

They've called it "one of the best things we've done as a band," but aside from that, [artist id="1231235"]30 Seconds to Mars[/artist] have remained tight-lipped about "The Summit," the fans-only gathering/recording session they held last month at Hollywood's Avalon club.

We know they used the audience as a sort of "musical instrument," recording their vocals — among other things — for use on their new album. But aside from that ... not much. The whole experiment is made even more compelling by the fact that — aside from a few snippets of video shot by fans and the band itself — no one has seen (or heard) anything that went on inside the Avalon.

Until now, that is. Earlier in the week, the band sent MTV News footage of the event, and after a few days of back-and-forth, we're finally able to show it to you.

The video shows Jared Leto and his bandmates leading the audience through a variety of audio experiments, including synchronized stomping, shouted "Heys!" and "Ooh-Ooh-Oohs!" and — most impressively — a rising, whisper-quiet-to-ear-splittingly-loud hum. We also see Leto's brother Shannon directing a drum exercise, with fans arranged around him in a circle banging on cardboard boxes (surely this is the "percussive expression" Jared told MTV News about a few weeks back).

It's not known just how much of the recordings will actually end up on the 30STM album — which will be hitting shelves in September on Virgin Records. It's also not clear if any of the footage the band shot during the Summit will end up on the long-gestating film Leto is editing in his L.A. home.