The German baritone, Matthias Horn, studied studied in Heidelberg church music and singing with Wolfgang Neumann, Eva Marguerre and Gisela Rühmert.
As a concert singer Matthias Horn particularly prefers J.S. Bach's works. Thus he sang with others Johannes-Passion (BWV 245) in the Nicolai Church of Leipzig, Mass in B minor (BWV 232) in the Freiburg Concert Hall and Matthäus-Passion (BWV 244) in the Philharmonic Concert Hall in St. Petersburg. He sang with conductors such as Frieder Bemius, Hermann Max and Thomas Hengelbrock and in various ensembles like the Orlando di Lasso-Ensemble, the ensemble Weser Renaissance or Musica Fiata.
Apart from this Matthias Horn has appeared in many festivals in new music and co-operated among others with Luciano Berio, Hans Zender and Péter Eötvös. From numerous premieres, in which he participated, As I crossed A bridge of dreams by Péter Eötvös (Donaueschingen, 1999) should be mentioned. With the pianist Christoph Ullrich he gives Lieder recitals. Their partly musical-literarure programs were noted several times by broadcast.