A. Loud
B. Melodious
C. Sonorous
D. Harsh
Loud: Producing much sound.
Sonorous: making a deep or ringing sound.
Harsh: Unpleasantly rough or jarring.
Melodious: Sweet or loving sounds.
CACOPHONOUS: producing a harsh, discordant mixture of sounds
Antonym of CACOPHONOUS is Melodious.