Intonation (noun)

1. The rise and fall of pitch in speech or singing.
2. The way in which the voice is modulated to express meaning or emotion.

Origin:

From the latin word intonare (to intone).

Examples:

1. The singer's intonation was perfect, hitting every note perfectly.
2. She spoke with a monotonous intonation that made it hard to stay focused.
3. Incorrect intonation can change the meaning of a sentence.
4. He had a good command of intonation, which helped him to convey the emotions in the song.
5. She was taught to use proper intonation when giving a speech.