added some important qualifications to the last paragraph
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Any interval of more than an octave is known as a compound interval - 9th, 10th, 11th, etc.
Any interval of more than an octave is known as a compound interval - 9th, 10th, 11th, etc.
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Intervals may also be referred as being concordant or discordant. All perfect intervals and all major and minor sixths are concordant. All other intervals are discordant.
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Intervals may also be referred as being concordant or discordant. Though the concept of which intervals are discordant or concordant have changed over time, and vary significantly from one culture to another, in Western music today it is usually considered that all perfect intervals and all major and minor thirds and sixths are concordant. All other intervals are discordant.