5th Dimension - "AQUARIUS/Let The SUNSHINE In" 1969 "Medley: Aquarius/Let the Sunshine In (The Flesh Failures)" (commonly called "Aquarius/Let the Sunshine In", "The Age of Aquarius" or "Let the Sunshine In") is a medley of two songs written for the 1967 musical Hair by James Rado and Gerome Ragni (lyrics), and Galt MacDermot (music), released as a single by American R&B group The 5th Dimension. The song peaked at number one for six weeks on the US Billboard Hot 100 pop singles chart in the spri

On this day in Music History - April 30 1969 The Fifth Dimension are awarded a Gold record for "Aquarius / Let the Sunshine In", a medley from the Rock musical Hair. The song currently sat at the top of the Billboard Hot 100 where it enjoyed a stay of five consecutive weeks. It made the Top 20 in thirteen other countries. | Johnny Rock and Roll Radio