Intervals Theory Things   William Wieland
Steps
Augmented SeventhA712P8Perfect Octave
Major SeventhM711d8Diminished Octave
Minor Seventhmi710A6Augmented Sixth
Diminished Seventhd79M6Major Sixth
Augmented FifthA58mi6Minor Sixth
Perfect FifthP57d6Diminished Sixth
Diminished Fifthd56A4Augmented Fourth
Augmented ThirdA35P4Perfect Fourth
Major ThirdM34d4Diminished Fourth
Minor Thirdmi33A2Augmented Second
Diminished Thirdd32M2Major Second
Augmented UnisonA11mi2Minor Second
Perfect UnisonP10d2Diminished Second
ConsonancesDissonances
 Perfect 

P8


P5



P1


 
 Imperfect 



M6 & mi6


M3 & mi3




 



7ths


P4 *

2nds

all aug.
all dim.
 
* above the lowest note
(Short List) Steps
Perfect OctaveP812
Major SeventhM711
Minor Seventhmi710
Major SixthM69
Minor Sixthmi68
Perfect FifthP57
Diminished Fifthd56A4Augmented Fourth
Perfect FourthP45
Major ThirdM34
Minor Thirdmi33
Major SecondM22
Minor Secondmi21
Perfect UnisonP10