Harmonica Chords

I keep some of my notes about my Harmonica Studies on my webpage:

Harmonica Studies by Michael P. Garofalo.

Chords for Harmonicas

By Michael P. Garofalo
June 25, 2024

Common Harmonica Keys: C A D G

I gathered the information provided below from a series of books by James Major titled "the Complete 10 Hole Diatonic Harmonica Series." Each book in the series is about one Harmonica Key. Detailed information, informative charts, well organized, excellent layout, and a valuable booklet of around 50 ages. For example, C Harmonica Book. By James Major. Mel Bay Publishing, 2005, 48 pages. VSCL.

Chords on C Key Harmonica

I C Major CEG (Blow Holes 456 or 789 or 123 or any 3 adjacent holes)

IV F Dyad FA (Draw 56 and Draw 9 10)

V G Major GBD (Draw Holes 234 or Draw Holes 1234

G7 GBDF (Draw Holes 2-5)

Gm DG (Draw 12) 

Dm DFA (Draw 456 and Draw 89 10)

Bb BDF (Draw 3456 and 789) 

Blues Second (Play on G Key Harmonica)

Chords on G Key Harmonica

I G Major GBD (Blow Holes 456 or 789 or 123 or any 3 adjacent holes)

IV C Dyad CE (Draw 56 and Draw 9 10)

V D Major DF#A (Draw Holes 234 or Draw Holes 1234

Gm Minor DG (Blow 34 and 67 and 9 10)

D7 DFmAC (Draw Holes 2-5)

Dm AD (Draw 12)

Am ACE (Draw 456 and 89 10)

F# FAC (Draw 345 and 789)

Blues Second (Play on ? Key Harmonica)

Chords on D Key Harmonica

I D Major DFA (Blow Holes 456 or 789 or 123 or any 3 adjacent holes)

IV G Dyad GB (Draw 56 and Draw 9 10)

V A Major ACE (Draw Holes 234 or Draw Holes 1234)

A7 AC#EG (Draw 2345)

Am EA (Draw 12)

Em EGB (Draw 456 and 89 10)

D Blow AD (Blow 34 and 67 and 9 10)

C Triad C#EG (Draw 345 an 789)

Blues Second (Play on ? Key Harmonica)

Use D Key Harp to Play Blues in Key of A