Lesson
divide octave into two parts:
C Eb C
---------------- Tritone ------------------------------ ------------------Tritone -------------------------------
divide octave into three parts:
C E G# C
----------- Major 3rd------------- -----------Major 3rd-------------- -----------Major 3rd-----------------
divide octave into four parts:
C Eb Gb A C
---------Minor 3rd---------- ---------Minor 3rd---------- ---------Minor 3rd--------- ---------Minor 3rd----
Divide octave into six parts:
C D E F# G# A# C
---Minor 2nd---- ---Minor 2nd---- -----Minor 2nd--- ----Minor 2nd--- ---Minor 2nd---- -----Minor 2nd----