Arpeggio quality

m9

The minor ninth chord extends the minor seventh with a ninth, adding velvet to an already soft harmony. The minor third keeps the dark colour, the seventh supplies the relaxed pull, and the ninth floats above like a distant bell. This is the sound of soul, R&B and contemporary jazz comping — rich but never harsh, because the ninth is consonant against both the minor third and the seventh. Players often drop the fifth to keep the voicing clear, so the arpeggio is a study in choosing notes rather than collecting them. Listen for the ninth against the minor third: that wide, warm interval is what makes the chord glow.