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Question: I don’t understand Musical Intervals?
I’m reading the book”Elementary music rudiments” and i don’t understand intervals like Major and minor and perfect intervals
Answer:
Answer by mamianka
Unisons, octaves, fourths and fifths are considered perfect – the ratio of their vibrations remains in relationships like 1:1. 1:2, 1:3, 2:3. There relationships go back to Pythagorean times, when they were held in great mystical esteem. We associate this purity of sound with stability. Seconds, thirds, sixths, and sevenths have to ability to change by a half-step, rendering them major or minor; not only by themselves, but when used in a scale, they change then entire *color* or expression of that scale – and therefore the melody that is created using that scale. One 1/2 step – minor second. 2 half-steps major second. A minor third is a half-step smaller than a major third – same with the sixths and sevenths.
Beyond this, there are augmented and diminished intervals, but that we can save for another question.