Chord Dictionary

Instantly show notes constituted of any chords when the cursor is over

After clicking the icon to start, mouse over any chords on any web pages and its notes constituted will be shown.
You can also click on it or press shortcut to listen to the chord.

Characteristics
• Support widely from simple chords to extended chords, slash chords, notations like +/-/Δ/○/omit and even roman numerals
• Convert a chord to roman numerals when a key is set
• Play the chord with customizable volume and instruments (piano, guitar, synth)
• Switches to choose whether click, shortcut and/or hover is enabled for playing the chord