April 27th

1966The Beatles use a cool new technique in a recording session at Abbey Road studios. It was in John Lennon's song 'I'm Only Sleeping,' they used a reversed guitar duet played by George Harrison.

1979 - Stevie Wonder surprises everyone by showing up at a tribute concert to Duke Ellington at UCLA. He plays "Sir Duke" and covers Duke Ellington's "C-Jam Blues."

1990 - It was the first day of  his American dates of the Sound & Vision Tour. David Bowie says he will play his old material for one last time and then retire them. This lasts until 2002 when he starts playing his most popular songs again stating that his best work is probably behind him.

2006 - It was this day while vacationing in Fiji, Rolling Stones guitarist Keith Richards suffers a brain hemorrhage after falling out of a palm tree. Doctors are forced to operate in order to drain his skull.