It would be considered a documentation because these are drawing from many years ago.
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Answer:
They made many discoveries and ways that we use today. We use measures, key signatures and more. They also inspired us to make new sounds.
Explanation:
Haydn has composed many works, and he is known as both the Father of the Symphony and the Father of the String Quartet. Famous works include Symphony No. 94 "Surprise", The Creation, Trumpet Concerto, Missa in Angustiis, Symphony No. 45, The Seasons, String Quartet Op. 76, Harmoniemesse, and many other piano sonatas, masses, operas, piano trios, etc.
