Answer: Violin
Thomas Jefferson was the third president of the United States of America, from 1801 to 1809. He is considered one of the founding fathers of the nation for being the main author of the Declaration of Independence of this country signed in 1776.
Jefferson was a multifaceted man, with some episodes of his life marked by scandals related to slavery. Besides of being a politician, he was a philosopher, a lawyer, an architect (he designed his own house, Monticello), an inventor, and among many other things, he loved to play the violin and he did it very well.