Final answer:
Johann Nepomuk Maelzel patented the metronome, while Beethoven, Haydn, and Mozart were prominent composers in Vienna, Austria during the classical music period.
Explanation:
Johann Nepomuk Maelzel patented the metronome. During the nineteenth-century, talented composers and pianists like Ludwig van Beethoven, Joseph Haydn, and Wolfgang Amadeus Mozart dominated the classical music period in Vienna, Austria. Beethoven, recognized as a virtuoso pianist and composer, faced challenges like deafness during his career.
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