Guitarist Chris Rubey (from Alternative Press): "We wrote that one, like, 'Alright, guys, we need a metal song. Let's make a super-metal song.' It's kind of a sleeping giant, you could say. When I listen to it, it definitely pulls out a lot of emotions in me. I would describe it as a very aggressive song, a very in-your-face and emotional [song with] lots of rewind-worthy moments. 'Forever Decay' and 'Vengeance' are two of the only songs that we have in the tuning of drop C."
Vocalist Mike Hrancia discussed the song's lyrical content with Alternative Press: "'Forever Decay' is very love/loss theme. It's super-dramatic - I'm not afraid to admit that, but I like it. There's a part, it's the second pre-chorus of the song, that's this big, driving progression with this lyric: 'She fell in love with the city line.' It's super emotional, and it just drives. That's definitely my favorite part of the song. When we finished the song all I could really think was, 'Wow, this is so old Prada.'"
Kacey Musgraves originally offered "Follow Your Arrow" to her friend Katy Perry. However, Perry thought Musgraves should record the song herself as it seemed, "like something that you would totally say."
"Crank That (Soulja Boy)" was the most successful digital track of 2007 in the US with 2,909,000 downloads. On January 6, 2008 it became the first song ever to sell 3 million digital copies in the States.