Notable recordings as a conductor include : the complete symphonies of Beethoven , Brahms , Bruckner , Schubert and Schumann , the Da Ponte operas of Mozart , numerous operas by Wagner , including the complete Ring Cycle , and various concertos .
He has made many recordings as conductor , including all the symphonies of Beethoven , Brahms , Bruckner and Schumann , and many operas by Wagner .