plan·gent
[ˈplanjənt]
ADJECTIVE
literary
(of a sound) loud, reverberating, and often melancholy.
“the plangent sound of a harpsichord”
synonyms: melancholy · mournful · plaintive · sonorous · reverberant · reverberating · resonant · loud
ORIGIN
early 19th century: from Latin plangent- ‘lamenting’, from the verb plangere.