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The [[5L 2s|diatonic scale]] is a classic example of an MOS scale. It has 7 steps: 5 large ones (whole tones) and 2 small ones (diatonic semitones). Writing out the pattern of the major mode, we get LLsLLLs. The other modes are rotations of this pattern (e.g. LsLLsLL is the minor mode.) The melodic minor scale, which is not a mode of the diatonic scale, (LsLLLLs) is not a MOS since it has three kinds of fifths: perfect, diminished, and augmented; and so ascending by four steps is equivalent to ascending by one of three possible intervals. | The [[5L 2s|diatonic scale]] is a classic example of an MOS scale. It has 7 steps: 5 large ones (whole tones) and 2 small ones (diatonic semitones). Writing out the pattern of the major mode, we get LLsLLLs. The other modes are rotations of this pattern (e.g. LsLLsLL is the minor mode.) The melodic minor scale, which is not a mode of the diatonic scale, (LsLLLLs) is not a MOS since it has three kinds of fifths: perfect, diminished, and augmented; and so ascending by four steps is equivalent to ascending by one of three possible intervals. | ||
See the [[catalog of MOS]] for a collection of MOS scales. | |||
== Naming == | == Naming == | ||
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While each characterization has a generalization to scale structures with more step sizes, the generalizations are not equivalent. The concepts of [[Balanced word|balance]] and [[distributional evenness]] provide still different generalizations, although defining MOS through these terms is less helpful. For more information, see [[Mathematics of MOS]]. | While each characterization has a generalization to scale structures with more step sizes, the generalizations are not equivalent. The concepts of [[Balanced word|balance]] and [[distributional evenness]] provide still different generalizations, although defining MOS through these terms is less helpful. For more information, see [[Mathematics of MOS]]. | ||
== History and terminology == | == History and terminology == | ||