Martin states, 'There won't be any other artists on the label for the foreseeable future'. In 2003, Martin decided to launch a self-published record label, Signature Records, which became his vehicle for publishing his music. Spanning 5x vinyl / double CD, the album began to define Calibre's soulful and melodic sound and imprint his name amongst the emerging Liquid Funk artists of the time.

On 25 September 2001, Calibre released his debut album on the Creative Source label run by the DJ and Drum & Bass veteran Fabio. Also, according to UKF as of 2014, none of his original productions have ever been officially remixed. Over 20 years of music production, he has self-published over 60 singles and 20+ albums. Beginning in 2007, the 'Shelflife' series of albums were created as a way of sharing previously unreleased productions with his fans. Although one of the scene's most prolific producers, he shares tracks with only a small circle of friends and many of his works remain unreleased. Short Circuits Magazine refers to him as 'one of the quietest people in drum and bass'. Since his initial releases in 2001, Martin has been known for his consistent signature style and sound. While studying Fine Arts at the University of Ulster in Belfast, he became interested in the music of John Cage whose work was influential in titling Martin's first album release Musique Concrète in 2001. He soon came to the attention of drum and bass DJ Fabio, who signed Calibre to his record label, Creative Source. Martin started producing Drum and Bass in 1995 and his first signed release was credited under the now defunct Quadrophonic record label. He is a classically trained musician, playing a variety of musical instruments. Dominick Martin, better known by his stage name Calibre, is a Northern Irish drum and bass music producer and DJ from Belfast.

Calibre bend