Editing Key signature (section)

=== Historical notation ===
[[File:Earlykeysig.png|thumb|right|80px|Variant key signatures in a [[Tomas Luis de Victoria|Victoria]] motet. In the ''superius'' (soprano) part the E{{music|flat}} appears first, and in two other parts a flat occurs in two octaves.]]

In music from the Baroque period, it is common to see key signatures in which the notes are annotated in a different order from the modern practice, or with the same note-letter annotated for each octave.