Concepcion is well known as "The Cradle of Chilean Rock", and it's the city where the band comes from.

UDK rose from the ashes of former 1993 first local rock festival winners Trauma. They battled their way through the Chilean Metal scene with a superior level of sound, that crossed most borders into the country, reaching ears into the latinamerican metal scene.

Since March of 1996, UDK has been a solid representative of fighter bands; they were the first in Concepcion to do a different music among Death, Grind and Heavy Metal bands.

In 1997, they made the move to Santiago to proceed with a five years career building the project; doing tours, recordings, live shows, line-up changes, and also shipping promo-packages to Indie and Major labels all over the world. A night of luck, one label executive from FreeNoise Records caught a UDK show and immediately wanted to sign them.

This alliance produced the November 2003 release of "Hands That Feeds", wich one was re-launched by Toxic Records during March of 2004 because of mismanagement from FreeNoise. Signed to this new label, official launchings in Santiago and Concepcion were held to promote the album as well as all the live dates the band did along the country and outside it, as the shows offered in Argentina and Uruguay. As part of their promotion, the video of the single "Rechazo" aired.

The reviews from websites and music critics like Rockaxis.com were very positive.

The end of 2006 had the band finally focusing on their new record. They had demoed all tracks in a home-studio and were ready to enter some studio to record the new CD.

During 2007, and after the most difficult line-up change in their career, the band continued working in the new record now with Omar Marchant on drums. Recording, mixing and mastering duties took place between September '07 and January '08 at SADE studios.

This new record includes two acoustical instrumentals with eight of the band's signature extreme-thrash metal tunes.