Robin Cox started his musical education at the age of 8 on the trumpet by Louis van den Waarsenburg. On the age of 12 he moved on to, what later would develop into his favourite instrument, the trombone, educated by Jan Hameleers and Rini Plant. Years later the trombone became more and more important to him, which made him decide to study at the Northern Conservatorium of the Netherlands in 1991, in the province Groningen. He choose Classical Music Trombone as his major, and attended lessons by Sipke Bakker, former principle trombonist of the Northern Symphonic Orchestra of the Netherlands. After several musical turns he graduated in 1997 as a Conductor for Symphonic Wind Orchestra's and Fanfare Orchestra's by Lex van Diepen, former conductor of the Symphonic Wind Band of the Royal Dutch Airforce, and in 1998 as a first degree Music Teacher for Secondary School by Ruth van der Putte. The tenor trombone as a major became bass trombone as a first minor in the majors conducting and music in secondary school.

Nowadays Robin works as a music teacher at the Etty Hillesum Lyceum in Deventer, in the province Overijsel. Here he teaches at the underclasses of Vmbo, Havo, Vwo and at the upperclasses of Vmbo. In the past he also has been a teacher at the SSgN in Nijmegen.

As a conductor Robin has been leading the pupils orchestra of the Akzo Nobel Filharmonie in Arnhem, Fanfare Orchestra "De Bazuin" in Ezinge, and Fanfare Orchestra "Vlijt en Volharding" in Heumen. 

As a basstrombonist at the Philharmonie Gelre in Arnhem, he still likes to participate in amateur music on the highest level. In the year 2002 this orchestra won the Dutch Championship from the national association KNFM at the highest level possible for amateur symphonic wind orchestra's. He also participates in Fanfare Orchestra "St. Cecilia" in Millingen aan de Rijn, as well playing in the first division for amateur orchestra's. Beside playing in this orchestra and in Quispel trombone quartet, he is a regular guest player in several orchestra's and ensembles, all related to symphonic wind music.