Stephen Sondheim finding a real synthesis. A good deal of pop music has interesting lyrics, but they are not theater lyrics". A musical-theatre composer "must have a sense of what is theatrical, of how you use music to tell a story, as opposed to writing a song. Jonathan understood that instinctively." Around 2008, Sondheim approached Lin-Manuel Miranda to work with him translating "West Side Story" lyrics into Spanish for an upcoming Broadway revival. Miranda then approached Sondheim with his new project "Hamilton", then called "The Hamilton Mixtape", which Sondheim gave notes on. Sondheim was originally wary of the project saying he was
Stephen Sondheim told him he was working on a musical version of "Romeo and Juliet" with Leonard Bernstein, but they needed a lyricist; Betty Comden and Adolph Green, who were supposed to write the lyrics, were under contract in Hollywood. He said that although he was not a big fan of Sondheim's music, he enjoyed the lyrics from "Saturday Night" and he could audition for Bernstein. The following day, Sondheim met and played for Bernstein, who said he would let him know. The composer wanted to write music and lyrics; after consulting with Hammerstein, Bernstein told Sondheim he could write music later.