Piano Concerto No.1 in C major Opus 15 Ludwig Van Beethoven
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Wagner: 15 facts about the great composer
It's variously loved, detested and admired by music fans, but you can't knock the Ring Cycle for its scale and ambition. It's estimated that composing the music for Der Ring des Nibelungen took Wagner from 1848 to 1874, and it wasn't given its full premiere in 1876 at the Bayreuth Festspielhaus.