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Answer:
Franz Joseph Haydn (1732–1809) was an Austrian composer, one of the most prolific and prominent composers of the Classical period.
Answer: The Trinity (Andri Rublev)
Explanation:
Here is the wiki page you can check out to find out more of the details yourself, hope this helps.
https://en.wikipedia.org/wiki/Trinity_(Andrei_Rublev)
Answer:
This instrumental technique is called double stops.
Hope this helps! :)
