Johann Sebastian Bach (1685-1750) was a German composer and musician of the Baroque period. He is considered one of the greatest musical geniuses of all time. He was a master of polyphony and brought to perfection the musical form of the fugue. He composed 1126 musical compositions of various forms (they are referred to by the abbreviation BWV and serial number). In his time, Bach became famous mainly as a keyboard player, but as a composer he was less known. His music was perceived as conservative, and after his death it fell into oblivion for almost fifty years.