Glassjaw is a highly influential post-hardcore band from Long Island, New York, USA. They formed in the summer of 1993, after Palumbo and Beck met each other at camp. They recorded some demos before releasing the EP "Kiss Kiss Bang Bang" in 1997, and recorded their first full length album "Everything You Ever Wanted To Know About Silence" in 2000 on Roadrunner Records. The record brought the band out of Long Island and into the hands of a dedicated grass-roots following.

Their sophomore album "Worship and Tribute" was released in 2002 on Warner Brothers Records. Although it received some MTV airtime, a Grammy nomination and a peak at #82 on the Billboard top 200, "Worship and Tribute" was a departure from the debut and was met with mixed reviews from fans. Since then, GlassJAw have not recorded any new material, releasing the digital-only EP "El Mark" in 2005, a release that consisted of three unused songs from the "Worship and Tribute" sessions.

In 2005, all members spare Palumbo and Beck left the band for reasons which remain unclear. It is supposed that they left involuntarily. Ex-drummer Durijah Lang was soon inducted back into the band and ex-bass player Manuel Ragoonanan Carrero so there was a functional lineup for playing shows. Indeed, the new four-piece GlassJAw played a handful of shows in Summer 2005. A new CD was apparently in the works for a release in 2007, but never surfaced. Daryl Palumbo also fronts electronic pop-rock band, Head Automatica, and ex-GlassJAw drummer Larry Gorman also played for them. However, Gorman is no longer a member of the band for unknown reasons. Ex-guitarist Todd Weinstock now plays in the similarly-styled band Men, Women, & Children.

After a two year hiatus, the band played three shows in 2005, two at The Downtown(R.I.P.) in Farmingdale, New York, with proceeds going to charity and also, a spot on The Used's tour at the Hammerstein Ballroom.

And after some mysterious updates on the GJ website, the 07 GJ tour had gone and ended already hitting up spots including yet another venue in Farmingdale, NY playing 2 shows in one day at The Crazy Donkey. They're currently due in England to play the Give It A Name festival