Ludwig van Beethoven (/ˈlʊdvɪɡ væn ˈbeɪt(h)oʊvən/ (About this sound listen); German: [ˈluːtvɪç fan ˈbeːthoːfn̩] (About this sound listen); baptised 17 December 1770 – 26 March 1827) was a German composer and pianist. A crucial figure in the transition between the Classical and Romantic eras in Classical music, he remains one of the most recognised and influential of all composers. His best-known compositions include 9 symphonies, 5 piano concertos, 1 violin concerto, 32 piano sonatas, 16 string quartets, a Mass the Missa solemnis, and an opera, Fidelio.