Charles-Louis Hanon (1819 - 1900) was a French piano pedagogue and composer. He is best known for his work The Virtuoso Pianist In 60 Exercises, which have become the most widely used exercises in modern piano teaching. Piano students all over the world know of Hanon’s famous training exercises for pianists. Both Sergei Rachmaninov and Josef Lhévinne claimed Hanon to be the secret of why the Russian piano school delivered an explosion of virtuosi in their time, for the Hanon exercises have been obliged for a long time throughout Russian conservatories; there were special examinations in which one had to know all exercises by heart to be played in all tonalities in highly advanced speed.