On this day in history, June 1, 1967, the Beatles released "Sgt.
Pepper’s Lonely Hearts Club Band," their 8th album — which
became the soundtrack to the "Summer of Love," according
to the official website of the Beatles.
With its 13 songs, the album was recorded in over 400 hours
during a 129-day period.
On a return airplane flight to London in November 1966, Paul
McCartney thought of the idea for this album.