Wouter was the solo Bass Trombonist with the Vlaamse Opera until 2009 where since then he holds the same position with the Holland Symfonia. As a freelance bass and contrabass trombone player, Wouter regularly performs with most of the symphony orchestras in the Netherlands and Belgium.
Wouter is also a conductor and is currently the director of the Kunst Na Arbeid Lunteren fanfareorkest
Trevor Grahl is a composer residing in Amsterdam, and is the winner of the McGill-CBC composition competition and of the Young Composers' Meeting in Apeldoorn 2010.
Perry Hoogendijk is the Principal Tuba of the Royal Concertgebouw Orchestra in Amsterdam and professor of Tuba at the Conservatorium van Amsterdam. Perry's currently undertaking a project of creating new solo music for the Tuba, 5 new works have been commissioned, and will be featured on Perry's solo album coming out in 2012.
Raymond Munnecom is the Principal Bass Trombonist in the Royal Concertgebouw Orchestra in Amsterdam, and also regularly gives lessons, clinics and masterclasses in the Netherlands and abroad.