What is Scale (music)?
[[File:C major scale.PNG|thumb|294x294px|[[C major]] scale. The eighth note is an octave higher than the first one. The interval (difference in pitch) between the third and fourth notes is smaller. So is the interval between the seventh and eighth notes.]] [[File:C Dur Klaviatur.png|thumb|The same scale (C major) on a [[piano]] keyboard. There is half a step (or a [[semitone]]) between two keys next to each other. The most common major scales use half steps between the third and fourth note and between the seventh and eighth notes. {{audio|Major scale-C.ogg|C major scale}}]] In music, a '''scale''' is a set of notes in order of their [[Pitch (music)|pitch]] (that is, their [[frequency]]).<ref>{{Cite web|url=http://gcide.gnu.org.ua/?q=scale&define=Define&strategy=.&definition=6&sub=2|title=scale - GNU Collaborative International Dictionary of English|website=gcide.gnu.org.ua|access-date=2019-05-26}}</ref> If the scale starts with the note which has the lowest pitch and goes up to the note with the highest pitch, the scale is called ''ascending''.<ref>{{Cite web|url=https://www.collinsdictionary.com/dictionary/english/ascending-scale|title=Ascending scale definition and meaning {{!}} Collins English Dictionary|website=www.collinsdictionary.com|language=en|access-date=2019-05-26}}</ref> If the scale starts with the note which has the highest pitch and goes down to the note with the lowest pitch, the scale is called ''descending''.<ref>{{Cite web|url=https://www.collinsdictionary.com/dictionary/english/descending|title=Descending definition and meaning {{!}} Collins English Dictionary|website=www.collinsdictionary.com|language=en|access-date=2019-05-26}}</ref> Scales are often the same both ascending and descending, but this is not always true. Very often, a scale is defined over an [[Interval (music)|interval]] (such as an [[octave]]). The most common scales use intervals of five, six or seven different notes. == Major and minor scales == === Major scales === On a [[piano]], there are white keys and black keys. If