Original: He made important early contributions to the representation of orchestral music on the gramophone, beginning in 1920 with Scriabin's Poème de l'Extase and afterwards conducting many excerpts from Wagner's Der Ring des Nibelungen and (in 1925) the complete Symphony No. 9 of Beethoven.
Simplified: These include Scriabin's Poème de l'Extase and many bits from Wagner's Der Ring des Nibelungen and (in 1925) the complete Symphony No. 9 of Beethoven.