Who is Amade Malherbeau from Revolution and what is their importance?

Amade Malherbeau was a composer during the French Revolution. As a guitarist, Andi is interested in Malherbeau and his compositions. For her senior thesis, Andi plans to write about Malherbeau's influence on composers through the decades. Later, when she seems to have been transported to 1795, she meets Malherbeau and stays in his home, giving him advice about his composition, the Fireworks concerto.