The Sonux Ensemble is a young men's choir from Northern Germany, made up of the tenors and basses of the Chorknaben Uetersen. The ensemble has already achieved a number of noteworthy results under the name "Männerstimmen der Chorknaben Uetersen" over the last few years: the singers won first prize at the sixth edition of the Deutscher Chorwettbewerb in 2002, and in 2005 the choir was one of five ensembles that were selected world-wide to take part in the Internationaler Kammerchorwettbewerb at Markoberdorf, where it was ranked as "international: very good".In 2007, the men's voices sang themselves to a first prize at the choir festival "Schleswig- Holstein singt" at Gut Salzau. At the Chorfest des Deutschen Chorverbandes in 2008, the ensemble was awarded first prize not only in the category "Romantik A," but also for the best interpretation of a folk song.

Together with the chamber choir I Vocalisti, which also sings under the direction of Hans-Joachim Lustig, the ensemble gave a greatly acclaimed concert under the direction of the American composer and conductor Eric Whitacre in 2010.

Stylistic open-mindedness is particularly important to the young singers and their director. Their programmes feature Renaissance, Baroque, and modern compositions, as well as titles from jazz, pop, and crossover repertoires. A special focus is the performance of contemporary works: commissioned music and the close collaboration with composers play a vital role in this endeavour.

The choir chose its new name, Sonux Ensemble, in spring 2013. The term "Sonux" is a hybrid between the Latin words "sonus" (sound) and "lux" (light).