This Ain't a Scene, It's an Arms Race

"This Ain't A Scene, It's an Arms Race" is a 2007 single by Fall Out Boy. It is from the album "Infinity on High". The song reached number 1 in New Zealand, the United States and Croatia.
Video clip.
The video clip starts off with the band finishing performing "Dance, Dance". They then walk off the stage, and one person starts playing "This Ain't a Scene, It's an Arms Race" on their mobile phone MP3 player. They then start performing the song in a recording studio. From the second verse, the band all do separate things.