Use 2 instead of Madd9
Use add9 instead of Madd9
Use add2 instead of Madd9
A Madd9 is a Major chord
How to construct a Madd9 chord?
Use the following intervals in any order to construct this chord. Start on a specific note on which you want to construct this chord from (for instance the note "C") and calculate each interval on top of it. Afterwards, you will be able to play it on your instrument.