Frederic Chopin

The young, eight-year-old Chopin played in Warsaw for the Tsarina Maria Feodorovna, to whom he offered two of his Polish dances.

An excerpt from the article 40 facts about Frederic Chopin
Young Chopin also played for Tsar Alexander I, who came to Warsaw for the session of the Parliament. At that time Frederic played a newly invented instrument - the eolomelodikon.

The Tsar was delighted, he gave the artist an expensive diamond ring, which Chopin later sold during his stay in Paris. He also received an offer to become the Tsar's court composer, but refused it.