Above: world-renowned "ondist" Thomas Bloch performs an improvisation on the ondes Martenot. Eighty-four years ago today, Maurice Martenot gave the first public demonstration of his new invention, an eerie-sounding electronic keyboard with keys he could wiggle to produce a vibrato-like sound and with a drawstring that enabled him to slide seamlessly between notes. Since this 1928 demonstration, the ondes Martenot has found a place in any number of works of classical and popular music and has become an area of specialization at conservatories of music throughout its native France. Want to know more? Here's a demonstration: http://www.youtube.com/watch?v=XF2T0CuUoxg Read more: The Ondes Martenot (Composer's Datebook)