Johannes Matthias Sperger, also often Johann, (Czech: Jan Matyáš Sperger; 23 March 1750 – 13 May 1812) was an Austrian double bassist and composer. Viola Concerto in D Major 00:00 First Movement 08:32 Second Movement 16:26 Third Movement Kurpfälzisches Kammerorchester conducted by Jiri Malát with violist Vidor Nagy Wilhelm Schütze (1840-1898) - The Posy. Sperger was born in Feldsberg,[1] and tra..