Popular music underwent a profound transformation during the period between 1954 and 1969; this change can be understood through the prism of the extraordinary planetary position of February 1962, which some call the Age of Aquarius.
The seven inner planets formed a stellium (multiple conjunction of planets) in Aquarius at the time of a total solar eclipse. Opposite the stellium was Uranus, approaching its half-cycle with Jupiter on 14 March 1962 (above left; click to enlarge).
A chart for the Woodstock Festival (above right) has the Jupiter–Uranus connection writ large, with airy ideals in Libra. Its Sun–Neptune square is both idealistic and druggy.