Tenso is the European network for professional chamber choirs. In Tenso Network Europe, the joint efforts and achievements of the most prominent European chamber choirs are combined and disseminated within the context of a growing European network. As of 2016 the network counts 20 members from 16 European countries.
The network was founded in 2003 by choeur de chambre accentus (FR), Latvijas Radio Koris (LV), Nederlands Kamerkoor (NL) and RIAS Kammerchor (DE). Since then, members have collaborated in developing the choral repertoire, coaching young performers and composers, and presenting new choral music to large audiences in the Tenso Days festivals. By involving amateur and youth choirs in their projects, the spin-off is extended to the large community of choral singers and audiences for choral music all over Europe.