A new milestone in Broadway history was set in 1968 when Hair, the first rock musical, opened to mass popularity. Tackling controversial and explosive issues of the era in a theatrically innovative fashion, the brash and exciting musical sustained a five year run at New York's Biltmore Theater. The show eventually spawned a total of fourteen national companies and produced eleven cast albums in different languages worldwide. A concept musical reflecting the anti-establishment energy of 1960s American "hippie" youth culture, Hair was seen by over four million people in its first two years of production, and the show ultimately grossed over $22,000,000 in revenue. The revolutionary musical generated several hit radio singles and brought to public attention a number of talented performers. The enormous success of Hair paved the way for a series of ambitious rock musicals, including Jesus Christ Superstar in the 1970s and Rent in the mid-1990s...