Complex sentence: He disliked recording, finding it incompatible with spontaneity, but he nevertheless made a substantial number of records ranging as widely as his concert repertoire, from Bach to the premieres he conducted, and including all the Beethoven symphonies.
Split into simpler sentences: He disliked recording, finding it incompatible with spontaneity, but he nevertheless made a substantial number of records. These range as widely as his concert repertoire, from Bach to the premieres he conducted, and including all the Beethoven symphonies.