Auto Roman Numeral Analysis  

 
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Overview Roman Numerals are a way to display Chord Names that show a Chord's relationship to the Key.
Although ordinary Chord Names are called "Absolute Chord Names", Roman Numerals are known as "Relative Chord Names" because they do not depend the actual Key.
An example For example, if Gmaj7 is displayed with its Relative (Roman Numeral) Name as IVmaj7, this means the Chord is the 4th Diatonic Chord in the Key of D, and its corresponding Scale Name is Lydian. If Gmaj7 is displayed as Roman Numeral Imaj7, this means the Chord is the 1st Diatonic Chord in the Key of G, and its corresponding Scale Name is Ionian.

 
Using Choosing one of the five Chord Display Modes from the Chord View submenu of the View menu changes the Chord's naming convention. The current selection is indicated with a bullet.