Although Hugo's many talents did not include exceptional musical ability, he nevertheless had a great impact on the music world through the endless inspiration that his works provided for composers of the 19th and 20th century. Hugo himself particularly enjoyed the music of Gluck and Weber and greatly admired Beethoven, and rather unusually for his time, he also appreciated works by composers from earlier centuries such as Palestrina and Monteverdi. Two famous musicians of the 19th century were friends of Hugo: Berlioz and Liszt. The latter played Beethoven in Hugo’s home, and Hugo joked in a letter to a friend that thanks to Liszt’s piano lessons, he learned how to play a favourite song on the piano – even though only with one finger! Hugo also worked with composer Louise Bertin, writing the libretto for her 1836 opera "La Esmeralda" which was based on the character in "The Hunchback of Notre Dame". Although for various reasons the opera closed soon after its fifth performance and is little known today, it has been recently enjoying a revival, both in a piano/song concert version by Liszt at the Festival international Victor Hugo et Égaux 2007 and in a full orchestral version to be presented in July 2008 at Le Festival de Radio France et Montpellier Languedoc-Roussillon.