Joost Geevers a versatile musician. Not only as a conductor and trombonist, but also as an actor in musical theater performances, as a teacher, composer and writer, it is his mission to convey the richness and value that music has to offer to a diverse audience.

As a guest conductor he frequently works with the The Hague Philharmonic and the National Ballet Orchestra. He is also an active advocate of new music at home and abroad. He conducted the Dutch premieres of Ives' Universe Symphony with the North Netherlands Orchestra and Stockhausens Hochzeiten aus Sonntag aus Licht with the Radio Philharmonic Orchestra. In the 2008-2009 season he was conductor at the Ligeti Academy of the Asko | Schönberg Ensemble. He also conducted the Netherlands Wind Ensemble, the Ives Ensemble, Ensemble Klang, Slagwerk Den Haag, the Diamant Fabriek, Aarhus Sinfonietta, Ensemble de Musica Contemporanea de Illes Balears and the Hafnia Chamber Orchestra, among others.

As a trombonist he freelances with the The Hague Philharmonic, the North Netherlands Orchestra, the National Ballet Orchestra, Phion, the Radio Philharmonic Orchestra and the Asko | Schoenberg Ensemble, among others. He is also co-founder and performer with the contemporary music theater company Neo-fanfare 9x13 and appeared on stage as a musician/actor in performances by the Dutch National Opera, the Noord Nederlands Toneel and Club Guy & Roni.

His first book 'In Conversation with the Old Masters' was published in 2015. And since 2016 Joost has been a teacher at the Royal Conservatory in The Hague and the Codarts Conservatory in Rotterdam.