
Rado died Tuesday night in New York City of cardio respiratory arrest, according to friend and publicist Merle Frimark.
Hair, which has a story and lyrics by Rado and Gerome Ragni and music by Galt MacDermot, was the first rock musical on Broadway, the first Broadway show to feature full nudity and the first to feature a same-sex kiss.
Hair made possible other rock musicals like Jesus Christ Superstar and Rent. Like Hamilton, it was one of only a handful of Broadway shows in the past few decades to find its songs on the pop charts.