The Berlin vocal ensemble sirventes Berlin and it's director Stefan Schuck present a real Berlin Christmas album: Berlin composers from the 19th to 21st centuries are collected here on one release, from Felix Mendelssohn Bartholdy, Carl Thiel, Albert Becker, Peter Cornelius and Heinrich von Herzogenberg to the contemporary composer Frank Schwemmer. In addition to such famous works as "Frohlocket, ihr Völker" by Mendelssohn, numerous unknown treasures have been rediscovered. Stefan Schuck founded the vocal ensemble sirventes Berlin in 2003 to perform the world premiere of the a cappella cantata "that they may life" by the Jewish composer Josef Dorfman as part of the Ecumenical Kirchentag in Berlin. Since 2008 the ensemble works regularly for the NoonSong. The outstanding quality of the ensemble is a testament to their intense and hard work.