So Tomo shows a jazzy chord and calls one of the notes the 12th and other the 9th.
Is the 9th the same as the 2nd and the 12th the same as the 4th?
Tomo does not refer to a "12th" degree or tension. The 9th is the same note as the 2nd. The 11th is the same note as the 4th. The 13th is the same note as the 6th.
Vicente Garcia
Felipe Restrepo
Here is Tomo's comment:
"Please don’t worry about those. When you understand a little more about music theory, everything will make sense!"