Music, when soft voices die,
Vibrates in the memory -
Odours, when sweet violets sicken,
Live within the sense they quicken.

Rose leaves, when the rose is dead,
Are heaped for the beloved's bed;
And so thy thoughts, when thou art gone,
Love itself shall slumber on.

Percy Bysshe Shelley

http://www.poemhunter.com/poem/to-music-when-soft-voices-die/