On March 30, 1969, the original Broadway cast of Hair joined variety host Ed Sullivan to offer a medley of the musical's opening and closing songs, "Aquarius" and "Let the Sun Shine In."

In honor of the anniversary, Hair director Diane Paulus and the cast of the acclaimed revival re-create that performance as part of the late night broadcast.

"The network wouldn't let us do anything involving nudity, but they did let us have smoke effects and allowed us the run of the theater. I don’t think Mr. Sullivan knew what to think of us, but he seemed to truly enjoy the exuberance of the young cast. It was an exciting night and, boy, did it generate a long line at the box office the following morning!," said Hair co-creator James Rado in a statement.

"The Late Show with David Letterman" airs on CBS television from 11:35 PM-12:37 AM, ET/PT; check local listings.

The revival of Hair began performances on Broadway March 6 and opened to positive reviews March 31, following an extended run at the Delacorte Theater last summer. Featuring book and lyrics by the late Gerome Ragni and James Rado and music by Galt MacDermot, Hair's cast is led by Will Swenson as Berger, Tony nominee Gavin Creel as Claude, Sasha Allen as Dionne, Caissie Levy as Sheila, Allison Case as Crissy, Kacie Sheik as Jeanie, Bryce Ryness as Woof, Darius Nichols as Hud, Megan Lawrence as Mother and Andrew Kober as Margaret Mead/Dad.

Tribe members also include Steel Burkhardt, Lauren Elder, Allison Guinn, Anthony Hollock, John Moauro, Ato Blankson-Wood, Brandon Pearson, Paris Remillard, Maya Sharpe, Theo Stockman, Tommar Wilson, Jackie Burns, Kaitlin Kiyan, Nicole Lewis, Megan Reinking and Saycon Sengbloh.

For further information visit HairBroadway.