Intonation
Having all the notes in tune on your instrument/voice
Dude, that kid sucks at guitar. Listen to his intonation!
Intonation
The sing-song noises that you make when you talk. They can add some or all of the meaning to what you're saying, such as when you're being sarcastic.
I thought that jerk was being serious when he called me a stupid idiot until I realized from his intonation that he was being sarcastic.
intonate
To make an intonation
"I play snare drum, I do nothing but intonate"
inton
Theo Spedding
"He's such an inton"