From Philadelphia, Pennsylvania

From last.fm:

mewithoutYou is a post-hardcore band from Philadelphia, Pennsylvania that formed in 2001. They are known for their warbling vocal style and introspective lyrics of lead vocalist Aaron Weiss, as well as their prominent bass riffs and atmospheric guitar. The band was originally conceived as a side project. The Weiss brothers and Kleinberg were playing together in another band called The Operation (who released one album, 2001's There Is Hope For A Tree Cut Down, on Takehold Records), but Aaron wanted to start another band to experiment with new sounds. Read more about mewithoutYou on Last.fm.