Music Manuscripts Orchestral music Scores Aleatory music Choruses, Secular (Mixed voices) with instrumental ensemble Facsimiles Instrumental ensembles Piano music Viola with instrumental ensemble Art and music Bass clarinet and percussion music Choruses, Secular (Mixed voices) with orchestra Choruses, Secular (Mixed voices) with percussion ensemble Composers Friends and associates History and criticism Operas Organ music Percussion music Piano quintets Piano with orchestra Quintets (Piano, clarinets (3), cello) Quintets (Piano, horn, percussion, violin, cello) Scores and parts String quartet with orchestra Trios (Flute, oboe, percussion) Trios (Piano, flute, glockenspiel) Trios (Piano, flute, percussion) Trios (Piano, flute, vibraphone)