The <fifths> element
The <fifths> element represents the number of flats or sharps in a traditional key signature. Negative numbers are used for flats and positive numbers for sharps, reflecting the key's placement within the circle of fifths (hence the element name).
This element is used in the following examples:
<assess> and <player>, <attributes>, <cancel>, <concert-score> and <for-part>, <double>, <instrument-change>, <key> (Traditional), <measure-distance>, <part-symbol>, <pedal> (Lines), <score-timewise>, <staff-type>, <staves>, <transpose>, Tutorial: Après un rêve, Tutorial: Chopin Prelude, Tutorial: Chord Symbols, Tutorial: Hello, World, Tutorial: Percussion, Tutorial: Tablature