His songs include In the Silence of the Night and Lilacs in addition to his wordless Opus 34, Vocalise.  
At this man's death, he left the unfinished opera Monna Vanna.  His songs include In the Silence of the Night and Lilacs in addition to his wordless Opus 34, Vocalise.  He dubbed the third movement an "introspective reverie" of a set of solo piano pieces known as his Six Moments Musicaux.  The fifth movement of one of his pieces is called "Lord, Now Lettest Thou" and is also dubbed the "Kiev Chant"; that work is formally titled All-Night Vigil but is better known as his Vespers.  He also wrote a choral symphony based on a translation by Konstantin Balmont that featured the Dies Irae theme, based on a Poe poem.  For 10 points, name this Russian composer of The Bells symphony and Rhapsody on a Theme of Paganini.
At this man's death, he left the unfinished opera Monna Vanna.  
Sergei Vasilevich {Rachmaninoff} [or {Rachmaninov}]