Source: wikibot/key-instrument
= Key (instrument)
{wiki=Key_(instrument)}
In music, the term "key" refers to the group of pitches, or scale, that forms the basis of a music composition. A piece of music is typically centered around a particular key, which determines the notes that are used most frequently and which notes will feel most stable or at rest when played. The key is indicated by a "key signature," which tells musicians which notes are sharp or flat throughout the piece.