Let the Sunshine In!

I bought this dear little Gerbera plant today, ready to brighten my Easter Sunday dining table: I've been so fed up with grey! Magically, as I I started to snap these sunshine flowers , the sun actually started to shine (albeit briefly)!

Aquarius/Let the Sunshine In was a medley of two songs written for the 1967 musical Hair. Does anyone remember this song/the musical?