monody

Etymology
From, from.

Noun

 * 1) An ode, as in Greek drama, for a single voice, often specifically a mournful song or dirge.
 * 2) Any poem mourning the death of someone; an elegy.
 * 3) A monotonous or mournful noise.
 * 4)  A composition having a single melodic line.
 * 1)  A composition having a single melodic line.