Produit de la contre culture hippie et de la révolution sexuelle des années 1960, certaines de ses chansons, inspirées de la théorie du New age, sont devenues des hymnes des mouvements pacifistes contre la guerre du Viêt Nam.
Hair est une comédie musicale rock de James Rado et Gerome Ragni (paroles) et de Galt MacDermot (musique) créée « off-Broadway » en octobre 1967 puis jouée à Broadway à partir d'avril 1968 pendant quatre ans sans interruption.

We starve, look at one another, short of breath
Walking proudly in our winter coats
Wearing smells from laboratories
Facing a dying nation of moving paper fantasy
Listening for the new told lies
With supreme visions of lonely tunes

Somewhere, inside something there is a rush of
Greatness, who knows what stands in front of
Our lives, I fashion my future on films in space
Silence tells me secretly
Everything
Everything

Manchester, England, England
Manchester, England, England
Across the Atlantic Sea

And I'm a genius, genius
I believe in God
And I believe that God believes in Claude
That's me, that's me, that's me
We starve, look at one another, short of breath
Walking proudly in our winter coats
Wearing smells from laboratories
Facing a dying nation of moving paper fantasy
Listening for the new told lies
With supreme visions of lonely tunes
Singing our space songs on a spider web sitar
Life is around you and in you
Answer for Timothy Leary, dearie
Let the sunshine, let the sunshine in
The sunshine in
Let the sunshine, let the sunshine in
The sunshine in