Punk trio Green Day have been a bit on the serious side since their resurgence in 2004 for the rock opera album 'American Idiot.' That trend continued with their last studio release, 2009's '21st Century Breakdown.' However, the band plans to go back to their less serious side with a trilogy of albums, appropriately named '¡Uno!,' '¡Dos!' and '¡Tré!' Singer Billie Joe Armstrong says Green Day are going for more of a straight up rock record. They recently unleashed a sneak peek at the trilogy's first album, and now they've released a trailer for '¡Dos!' as well.

Armstrong sat down with Rolling Stone and told the magazine how the group wanted to go back to basics with the new discs. "The last two records were studio albums. This one, we started rehearsing every day, constructing these songs together," Armstrong said. "It felt like we were all in a room jamming ... everyone in the mix, throwing out ideas. If you listen to it, it feels grand. But it also feels like a garage band."

That is indeed what Green Day are going for, judging by the new trailer for '¡Dos!,' which you can watch below. The clip is only 34 seconds long, but it gives viewers an idea of what to expect from the band's new releases. Look for '¡Uno!,' '¡Dos!' and '¡Tré!' on Sept. 25, 2012; Nov. 13, 2012 and Jan. 15, 2013.

Watch Green Day's '¡Dos!' Album Trailer