Simply type in the names of the chords that you'd like played, with a space between each chord. Set the tempo by entering a delay time (in fractions of second) to be paused between each chord. Click the start button to hear the chords played repeatedly. Save and load progression for any songs you've created. Chord types include major triad, minor triad, dominant 7th ("7"), major 7th ("maj7"), minor 7th ("m7"), diminished 7th ("dim7"), and half diminished 7th ("m7b5").