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Pythagorean Ratios and Pythagorean Intervals
Here's a little self-demonstration of Pythagorean Ratios and Pythagorean Intervals
- Play the note:
- Now play the perfect fifth (seven semitones) above, which is G:
- Next, play the perfect fifth (seven semitones) above G, which happens to be D, like
this:
- Next, play the perfect fifth above D, which is A:
- Then the perfect fifth above A, which is E:
- Then the perfect fifth above E, which is B:
So far, you’ve played the following sequence of six notes:

The highest note, B, is almost three octaves above the C you started with.