About Chamber9

is an ensemble which focuses on continuing the legendary heritage of classic jazz in a surprising combination of instruments.

Chamber9 celebrates compositions of Jazz and “American Songbook” composers and compositions of band members in contemporary arrangements; harmonically rich with lots of room for improvisation. The sound of Chamber9 has a definite “wow factor”, which we think is unique in contemporary Jazz.

Chamber9 was founded in 2019.
The ensemble consists of 9 musicians, including 2 guitars, jazz vocals, string quartet and rhythm section. The sensuous and elegant combination of ‘modern’ and ‘classical’ string instruments highlights their luscious beauty and warmth in harmonically rich arrangements, supported by a hard swinging rhythm section with on top the vocal power of one of Europe’s best jazz singers.


Chamber9 has a unique sound and vision on the musical material they present. A somewhat classicist approach in form and expression is counterbalanced by the excitingly modern use of instrumental colors and choice of individuals who represent a generation of musicians who are able to merge musical worlds which were once separated. Composition, arrangement and styles of improvisation converge, contributing a rich palette of sounds to contemporary music.
In this way we would like to take our audience on an artistic journey in the world of classical and contemporary jazz in the character of intimate yet exciting chamber music.

Our first project was documented on September 20th 2019 with a wonderful concert organized by Daniel Slaman of Slamanguitars (www.slamanguitars.com). We presented an evening with selected pieces by the timeless Duke Ellington and Billy Strayhorn, arranged by Axel Hagen in two compilations of two times 40 minutes of continuous music.

This project has been released on CD (double CD) in October of 2020.

You can find the Ellington/Strayhorn CD here: Chamber9-CDreleases


In November 2023 Chamber9 we recorded new material consisting of originals and selected standards to be released in November 2024. We present the CD on these concerts:

01.11.24 Leonardo Hotel, Den Haag

03.11.24 Buiksloterkerk, Amsterdam

08.11.24 Hochschule für Musik, Würzburg-Duitsland


consists of:

Sanna van Vliet – vocals
Axel Hagen – steel string jazz guitar
Michael Arlt – nylon string jazz guitar
Thomas W.Andersen – acoustic bass
Joan Terol Amigo – drums/percussion

Víctor Flores – violin
Ángela Moya – violin
Kardelen Buruk – viola
Cèlia Torres – cello

all arrangements by Axel Hagen