This plugin provides two functions to simplify the creation of accordion parts.
The basses section of the accordion uses a somewhat unusual notation system. The middle line ("D" line) of the bass clef is used to divide bass notes from chord notes. All notes below the "D" line are considered individual bass notes. All notes on or above are considered abbreviations for chords, with the specific chord type being indicated by text above the note. (See http://www.planet-accordion.com/wp-content/uploads/2014/04/About-Accordion-Bass-Notation-744x1024.png)
The Accordion Notator plugin has two modes of operation. In the first, it will take standard accordion notation and render it for playback. The basses and chords will be fully realized and written into a second voice. The second mode analyzes fully realized chords, and converts them into accordion notation.
1) Render Accordion Notation
Will convert this:
Though the result will be in a second voice and hidden
2) Convert to accordion notation
This will do somewhat the opposite, converting the fully realized chords back to accordion notation, though the conversion is done in-place in the same voice.
Highlight Optional Notes - If selected, the notes that form the boundary of the bass/chord area (by default "D" and "C" mid staff) will be highlighted in yellow. These notes are not generally used unless it greatly clarifies the passage.
Render To Destination Voice - Since the conversion to accordion notation occurs in place, selecting this option will automatically render the result for playback. It's the equivalent of running "Render Accordion Notation" on the result
Voices - You can change which voice is used as a source, and which as a destination for rendering.
Diatonic Note Ranges - You can change the range of the basses section including the bass/chord boundary. These are diatonic values.
Default chord type - The chord type in an accordion part is assumed to remain the same until otherwise indicated. The plugin, however, needs to see an initial chord symbol in order to properly render the part. Since it is possible that the selected area does not have a chord symbol, this allows you to set the assumed chord.
Defaults - Resets the dialog to its defaults.