Cacophony is harsh, discordant sounds. Opposite of euphony.
Example:
finger of birth-strangled babe.
Player Piano My stick fingers click with a snicker And, chuckling, they knuckle the keys; Light footed, my steel feelers flicker And pluck from these keys melodies. My paper can caper; abandon Is broadcast by dint of my din, And no man or band has a hand in The tones I turn on from within. At times I'm a jumble of rumbles, At others I'm light like the moon, But never my numb plunker fumbles, Misstrums me, or tries a new tune. -John Updike- New Yorker 1954