If you had the chance to travel back in time to see an auther,song writer,or an idea when it was first thougt?

If you could look over the shoulders of any author or songwriter in history while they wrote their best work who and what play, novel, song,or idea would it be. some examples are; Shakespeare picking up the pen to write "Romeo and Juliet" (play underlined), or watching the whole process of stan lee creating the whole marvel world and all the ideas (kirby helped), watching the original Mono lisa being painted from the first stroke to when it was finish, watching the beatles form, michael jackson first perform the moonwalk, jimi hendrix first pick up the guitar or finally watching someone saying "lets give this woman oprah winfrey her own show"?