One altered degree: which one, and by how much.
alter: 0 is not redundant — it says the degree is present and unaltered, which is what the natural ninth of a thirteenth chord is.
alter: 0
One altered degree: which one, and by how much.
alter: 0is not redundant — it says the degree is present and unaltered, which is what the natural ninth of a thirteenth chord is.