olemus
suhteline helikõrgus muusikas

Merriam-Webster:
10 music
10a: a step, note, or tone of a scale

ülevaateid
https://en.wikipedia.org/wiki/Degree_(music)

http://musictheoryfundamentals.com/MusicTheory/scaleDegreeNames.php

vt ka
- aste (1)
- aste (2)
- aste (3)
- aste (4)
- aste (5)