Written after the bitter end of a long-term relationship, the album chronicles a full year of post-breakup experiences. Each track on 12 Angry Months corresponds to a month, and deals with the range of emotions one encounters after love turns sour. Those emotions range from anger ("so, baby could you do me a favor? fall off the earth and i'll see you later"), to jealousy ("this is crazy, I can't believe that you replaced me"), to acceptance ("you knew we'd never make it anyway").

Highly regarded for their powerful sound and unique two-man lineup with Scott Lucas on vocals and guitar and Brian St. Clair on drums, Local H is known for derisive lyrics, heavy guitars and feedback, energetic live shows, and an active relationship with their fans. The band performs regularly, and will be on tour nationally in 2008.

In 2007 Local H showcased their typical humor when they played a show at Chicago's Cellular Field, and fans were only granted tickets by finding Lucas around town and proclaiming "Attention all planets of the Solar Federation - we have assumed control." Other shows have seen the band passing out a sushi menu-type ballot to take song requests, auctioning off a concert on eBay, and performing under the names and guises of other bands, including Nirvana, Tom Petty, Led Zeppelin, and Hall & Oates.

Originally formed in Zion, Illinois, Local H released their first album, Ham Fisted, on Island Records in 1995. On that album and the gold-selling follow-up As Good As Dead, the band came to be known for sardonic songs such as "Eddie Vedder," "High-Fiving MF" and had their biggest hit with the alternative radio staple, "Bound For The Floor."