I first played "The Hamilton Mixtape" for teachers at my AP summer institutes last July before Hamilton had opened on Broadway. Who could have known at that time that Ron Chernow's great biography of Alexander Hamilton would become such a hit as a musical? With the 16 Tony nominations it earned today, Hamilton broke a record for the most nominations in the 70-year history of the Antoinette Perry Awards. (Prince had called Hamilton the "best history class ever.") All honor to Lin-Manuel Miranda who wrote the music, lyrics, and book for the show. I've embedded a video of Lin-Manuel performing "The Hamilton Mixtape" at the White House in 2009, six years before Hamilton hit Broadway. Lin-Manuel was performing for a White House Evening of Poetry, Music, and the Spoken Word.