• Chords and extensions: select the chords and extensions you want to use (green color indicates selection). You can select all extensions of any type of chord by clicking on the chord button.
• Play extension(s) after chord if selected the extension is played a second later after the seventh chord.
• Answer using:
• Chord: answer using the chord type and extension.
• Note: answer using the note name.
• Visual keyboard: answer using a visual keyboard.
• Clef: select the clef to use.
• Retry in case of error: select if you want to be able to retry if you make an error.
• Stop after: choose to stop after a certain number of minutes or exercises.
• Answer in: limits the time you have to answer.
• Click OK to start the exercise or press Enter/Return.

Identify the chord and extension by chord or note name, or by clicking on notes on a visual keyboard.