Otonality and Utonality
（重定向自Otonalities）
![5-limit Otonality and Utonality: overtone and](/Images/godic/202501/31/Otonality_and_utonality_5-limit4920.png")
![Minor as upside down major.](/Images/godic/202501/31/Minor_as_upside_down_major4920.png")
Otonality and Utonality are terms introduced by Harry Partch to describe chords whose pitch classes are the harmonics or subharmonics of a given fixed tone (identity), respectively. For example: 1/1, 2/1, 3/1,... or 1/1, 1/2, 1/3,....