Pitch & Harmony
Intonation
How accurately pitch is controlled while playing or singing.
In plain English
Intonation is about whether notes land in tune as the music happens. It matters especially for voice, fretless strings, brass, woodwind, bends, slides, and expressive pitch movement.
Try or listen for this
Hold a long note against a drone and listen for whether it settles into the reference pitch or wavers above and below it.
Why it matters
Good intonation helps melodies, harmonies, and sustained notes sound confident rather than tense or unsettled.