4/05 – 1989 David Letterman is the first network TV show to use Dolby Stereo sound

4/06 – 1906 First animated cartoon copyrighted

4/07 – 1805 Beethoven himself conducts the Premiere of his 3rd/”Eroica” Symphony

4/08 – 1986 Clint Eastwood is elected mayor of Carmel California

4/09 – 1667 The Palais-Royale in Paris hosts first public art exhibition

4/10 – 1970 Paul McCartney announces The Beatles are disbanding

4/11 – 1869 Designer of the Nobel Peace Prize, sculptor Gustav Vigeland, is born in Norway