 Poème élégiaque in D minor was dedicated to a composer whose best-known works are "Pavane", "Après un rêve" and what? 
Poème élégiaque in D minor, Op.12 (Ysaÿe): Poème élégiaque in D minor, Op. 12 for violin and orchestra (or piano) is the first of Eugène Ysaÿe's poems for string instruments and orchestra.
i don't know