One scale, the barest voice
The notes are nothing but the major scale, degrees 1 through 8:
pitch 1 2 3 4 5 6 7 8What you hear them through is the simplest possible instrument: a single sine wave with a quick decay — no attack, no sustain, no color. It’s the skeleton a voice is built on.
Across the next three examples the notes never change; only the instrument does. Same data, four different sounds — start here and listen to what each step adds.