A rock'n'roll on other party of a lens

Photographers Patti Boyd (Pattie Boyd), Henry Dilts (Henry Diltz), Bernstayn Joel (Joel Bernstein) and Graham Nash (Graham Nash) who is also known on group Crosby, Stills, Nash %26 Young, that without knowing, became one of the best chroniclers of a rock'n'roll. Having got behind the scenes of this world and having made friends with the most abrupt rock stars, they removed, aiming a lens in daily occurrence...