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Changes
m
→Just Intonation
For example, a M7 interval in just intonation is a 15:8 ratio of the two notes. So the just intonation A-G interval where A is 110 HZ means G is 206.25 HZ. The A-C minor third is 6:5, which means C is 132 HZ. C-G should be a P5 interval, which is 3:2. But 3:2 x 132 HZ is 198 HZ, not 206.25 HZ.
==== Key ====
Describes a [[#Scale|scale]] as well as a [[#Tonic|tonic note]]. This tells us the absolute pitches or notes we are likely to use, as well as the [[#Tonality|tonality]].
==== Leading Tone ====