 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. Poème élégiaque in D minor, Op.12 (Ysaÿe):  Dedicated to Gabriel Fauré, it served as an inspiration for Ernest Chausson's own Poème, Op. 25. Gabriel Fauré: Gabriel Urbain Fauré (] ; 12 May 1845 – 4 November 1924) was a French Romantic composer, organist, pianist and teacher. Gabriel Fauré:  Among his best-known works are his "Pavane", Requiem, nocturnes for piano and the songs "Après un rêve" and "Clair de lune".
Clair de lune