The Münchner Posaunen Quartett has a demanding goal in mind and ear. The four musicians aim to open up anew all the sonic facets of 400 years of stylistic diversity from Michael Praetorius (1612) to Samuel Barber (1936). And they succeed in this aim on the CD presented here: One listens to familiar works more intensively than ever less familiar works markedly heighten the joy in making new discoveries, encouraging the listener to continue and repeat the experience.Baroque music theorist Johann Mattheson's statement from 1713 was considered valid for a long time, namely that "the large and small trombones can form a complete choir, but are only rarely used apart from church music and solemnities." But that was not all that challenged the Munich quartet to take exception. They were also challenged to prove that the unjustifiably termed "heavy brass" can definitely attain a thoroughly chamber-music-like tenderness and expressive richness - as the baroque informant Mattheson puts it, "a gallant gentleman acquiring a complete conception and dignity from the noble MUSIC."Thomas Horch is principal trombonist of the Bavarian Radio Symphony Orchestra. He is lecturer at the Richard-Strauss-Conservatory and from 2008 on at the University of Music and Performing Arts in Munich.Dany Bonvin is principal trombonist of the Munich Philharmonic and member of the ensemble Blechschaden. He is professor at the Mozarteum in Salzburg.Uli Pförtsch is principal trombonist of the orchestra of the Bavarian State Opera.Volker Hensiek is bass trombonist of the Bamberg Symphony Orchestra. He is teaching at the University of Music and Performing Arts in Munich.