Paramore come out rocking on 'Monster,' a single from the 'Transformers: Dark of the Moon' soundtrack.

Those who thought Paramore might go the safe pop route after the success of the ballad 'The Only Exception' and singer Hayley Williams' appearance on B.o.B's 'Airplanes' might be surprised by the song's aggressive tone.

'Monster' is the group's first song since the December departure of founding members Josh and Zac Farro, and it's almost as if the remaining band members feel they have something to prove.

Accompanied by heavy guitars, Hayley Williams sings:

"I'll stop the whole world, I'll stop the whole world / From turning into a monster, eating us alive / Don't you ever wonder how we survive? / Well now that you're gone, the world is ours."

The lyrics could be a veiled reference to the less-than-amicable departure of the Farro brothers. Williams sings, "I'm not the villain, despite what you're always preaching / Call me a traitor, I'm just collecting your victims."

With its solid hook and high-profile soundtrack placement, 'Monster' has the potential to be one of the biggest hits of Paramore's career.

Paramore continue to record their next album with producer Rob Cavallo. The 'Transformers: Dark of the Moon' soundtrack, which also features Linkin Park and Goo Goo Dolls, arrives June 14, while the movie hits theaters June 29.

Listen to Paramore, 'Monster'