Stephen Sondheim, the most influential composer in modern Broadway history, died on Friday at the age of 91. He wrote music and lyrics for Sweeney Todd, Into The Woods, Sunday In The Park With George, Company, and more. Sondheim won eight Tony Awards, eight Grammy Awards, a Pulitzer Prize for Drama, and the Presidential Medal of Freedom. And along the way, he made work so beloved that it's been produced again and again around the world, and influenced other Broadway composers like Lin Manuel-Miranda and Jonathan Larson.