Heavier Than Air Flying Machines might always be a question mark of a band. Nothing about the gritty, high-gain debut album, Siam (released last September), is typical, nor anything about the band's spastic live performance. But then again, that's just the point of the band.

Sometimes it only takes a single opportunity to open the door to success. Just ask singer-songwriter Christina Perri, whose song "Jar of Hearts" made its way on to the June 30, 2010 episode of the television show, "So You Think You Can Dance." Now, less than two years later, Perri has been seemingly thrust in to the spotlight.

"It's been bananas!" Perri said of the journey so far. "It was one great day that hasn't stopped for two years."

Trying to follow up the platinum Sound of Madness record, which features the double-platinum single "Second Chance," was no easy task for Shinedown, a band that has dominated rock radio since the album's release in 2008.

On Jan. 10, Rebelution released Peace of Mind, which has been labeled as the band's best work to date. The release also saw two versions of the album: acoustic and dub. The unconventional format seemed to work, as Peace of Mind debuted at No. 13 on the Billboard Top 200 and was No. 4 on iTunes.