Which Russian Composer is the Pyotr Ilyich Tchaikovsky symphonic poem Francesca da Rimini, dedicated to? 
Francesca da Rimini (Tchaikovsky): Pyotr Ilyich Tchaikovsky's symphonic poem Francesca da Rimini: Symphonic Fantasy after Dante, Op. 32, was composed in fewer than three weeks during his visit to Bayreuth in the autumn of 1876. Sergei Taneyev: Sergei Ivanovich Taneyev (Russian: Серге́й Ива́нович Тане́ев , "Sergey Ivanovich Taneyev", ] ; November 25 [O.S. November 13] 1856 – June 19 [O.S. June 6] 1915 ) was a Russian composer, pianist, teacher of composition, music theorist and author.
i don't know