intonare

Verb

 * 1)  to tune (an instrument)
 * 2)  to train (the voice) to be in tune
 * 3) to start to sing
 * 4) to intone (a speech, sermon, etc.)
 * 5) to match, to harmonize
 * 1) to match, to harmonize

Etymology 2
From.

Verb

 * 1)  to deafen

Etymology
From.

Noun

 * 1) intonation