Musician and composer living in Copenhagen, Denmark. He is primarily working as a double bass player in the field of improvised music with and without notated material. With a physical, detail-oriented approach and a rich palette of sounds – often with the use of unconventional/extended techniques – he is aiming for contrasts and dynamic forward motion in the music. Thomsen has established himself as a strong improvisor in the Copenhagen scene and can be heard in many different contexts spanning from alternative pop to free/experimental jazz and avant-garde. Leading or co-leading projects such as Den Polyvalente Hjelm, Magpie and Konkyhlie.
Educated at Syddansk Musikkonservatorium, Esbjerg (Bachelor) and Rythmic Music Conservatory in Copenhagen (Music Performance, Master Degree). Studied with Søren Kjærgaard, Thommy Andersson, Adam Pultz Melbye, Torben Snekkestad, Jacob Anderskov, Mazen Kerbaj, and many others. Toured in Denmark, Germany, Poland, Indonesia, Malaysia, Singapore, and USA.