A Blues 9th ChordsAbout This Lesson Blues 9th Chords I’ll be using the 9th Chords that I talk about in the 9th Trick video series (chord page).  Using a 9th chord can really bulk up the sound. How I Play the Chords in this Lesson A9 = G B C# E D9 = C E F# A E9 = D F# G# B...