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early age and was vigorously taught by his father Johann van Beethoven, and was later taught by composer and conductor Christian Gottlob Neefe. At age 21, he moved to Vienna and studied composition with Joseph Haydn. Beethoven then gained a reputation as a virtuoso pianist, and was soon courted by Prince Lichnowsky for compositions, which resulted in Opus 1 in 1795. The piece was a great critical and commercial success, and was followed by Symphony No. 1 in 1800. This composition was distinguished for its frequent use of sforzandi, as well as sudden shifts in tonal centers that were uncommon for traditional symphonic form, and the prominent, more independent use of wind instruments. In 1801, he also gained notoriety for his six String Quartets and for the ballet The Creatures of Prometheus. During this period, his hearing began to deteriorate, but he continued to conduct, premiering his third and fifth symphonies in 1804 and 1808, respectively. His condition worsened to almost complete deafness by 1811, and he then gave up performing and appearing in public." - (en.wikipedia.org 30.10.2019)