GMS

Psy-trance group based on Ibiza, Spain and regularly touring the world. They appeared on numerous releases.

Former members have been Sebastian Claro, who left the group after a two-year stint, Biton from Israel, who left the group after the completion of Chaos Laboratory and Amrit, who was mainly a DJ, but participated in some tracks during the 90s.

G.M.S. began when Matkin and Quinteros met in high school at age 14 in Amsterdam. Both were passionate about electronic music and the duo chose to leave school and seek their education in the club scene. Even though they were too young to legally enter a nightclub, Riktam and Bansi began spinning at clubs in Amsterdam. On most occasions, they had to be whisked into the building's side door to avoid scrutiny by the authorities. Amsterdam's club/rave scene was in its infancy In the early 90's and genres like gabber dominated the fledgling culture.

Two years later, they traveled to Goa and experienced a musical epiphany. It was in Goa, India they started playing goa trance, deejaying at some of the wildest, most memorable parties of their young lives. After returning to Amsterdam, one of their friends had purchased some recording equipment. They started their production career and named themselves G.M.S.

In 1997, they moved to Ibiza, Spain and in 2000 they formed Spun Records with partner Seth Hoffman.
Josef Quinteros passed away on 19/06/2018 and GMS has become a solo project by Matkin since then.