The radical change Franz Liszt's compositional style underwent in the last 20 years of his life was unprecedented in Western classical music. The tradition of music had been one of unified progression, even to the extent of Johannes Brahms' First Symphony being known as "Beethoven's Tenth". Beethoven's own three periods of composition are monolithic and united. Liszt's, by comparison, seem deconstructivist. Replacing pages which in Liszt's earlier compositions had been thick with notes and virtuoso passages was a starkness where every note and rest was carefully weighed and calculated, while the works themselves become more experimental harmonically and formally.