D add9 on E9 pedal steel
D add9 = D · E · F♯ · A (root, 9th, 3rd, 5th). 948 playable voicings on the standard E9 copedent — the best 12 by neck position below.
Low neck (frets 0–7)
Fret 0 · openFret 0 · BB raises strings 3 & 6 a half step (G♯→A)Fret 3 · LKR + RKLLKR lowers strings 4 & 8 a half step (E→D♯)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)Fret 1 · A + LKLA raises strings 5 & 10 a whole step (B→C♯)LKL raises strings 4 & 8 a half step (E→F)
Mid neck (frets 5–12)
Fret 10 · openFret 8 · RKRRKR lowers string 4 a half step (E→D♯); lowers string 5 a half step (B→A♯)Fret 12 · openFret 12 · BB raises strings 3 & 6 a half step (G♯→A)
High neck (frets 10–17)
Fret 12 · B + RKLB raises strings 3 & 6 a half step (G♯→A)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)Fret 13 · A + LKLA raises strings 5 & 10 a whole step (B→C♯)LKL raises strings 4 & 8 a half step (E→F)Fret 13 · C + LKRC raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)LKR lowers strings 4 & 8 a half step (E→D♯)Fret 15 · LKR + RKLLKR lowers strings 4 & 8 a half step (E→D♯)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)