Tijs Klaassen (1993) picked up the double bass at the age of 19 during his second year at the Conservatory of Amsterdam. Switching from bass guitar to completely focus on the instrument he loves the most. He studies at the faculty with jazz teachers Ernst Glerum, Frans van der Hoeven, Ruud Ouwehand and classical teacher Peter Leerdam. In the last four months of 2017 he studied with David Wong at the Boyer College of Music in Philadelphia. During his stay in the United States he followed private lessons with Ron Carter, Orlando Le Fleming, Rick Rosato and Ben Street. He will finish his master studies in 2018.

Tijs won the Prinses Christina Concours in 2012 with the group ‘Oosterdok 4’ and again in 2016 with the Ian Cleaver trio. He also appears on three records released by trumpet player Gidon Nunes Vaz.
With the Floris Kappeyne trio he played and toured in Tanzania, Slowakia, Belgium and Germany. Their debut album was released in june 2017 on Challenge Records International and featuresĀ all original compositions by Floris and Tijs. The trio also appeared on national tv programs in both the Netherlands and Belgium.
Tijs is also a member of the Josse van der Schaft trio which will release their debut album in the beginning of 2018. This record is released by the new Fattoria Musica label based in Germany. It features original music by the the bandleader.

Playing with these groups, and as a sideman with others, led him to play at festivals and venues like: het Bimhuis, North Sea Jazz Festival, Muziekgebouw aan het Ij, het Concertgebouw, Goois jazz festival and jazzclub Mampf.