I suppose Nashville numbers can be used with any scale/key. But, first understand Nashville numbers came into use by the 6 string guitar guys that
strum the chords. Strumming and playing chord tone bass lines are two different things and we bass players must adapt NN to our way of playing. Granted most of what I use it with are major scale keys. Lets see how we could do this in a minor key...... I'm figuring this out as I type.
The chords in D Harmonic Minor are: Dmin Edim Faug Gmin Amaj Bbmaj C#dim
Transposing that to Nashville #'s........1......2......3......4.......5......6........7
Click here
Chords In The Key Of D Harmonic Minor this site will also give the scale notes.
Chord progressions using the harmonic minor scale will often be mixed with chords taken from the other minor scales. It's common therefore to see something like i - iv - V7 (or in our case V {upper case thus Major}) progressions where the V7 is taken from the harmonic minor while the rest of the chords are taken from the natural minor. Should get this into the picture;
D Major Scale notes = D, E, F#, G, A, B, C#
D Harmonic minor =...D, E, F,.. G, A, Bb, C#
The 3rd and 6th are flatted (lowered a semi-tone) in Harmonic minor.
So on your chord chart, fake chord sheet music, whatever you have ----- mark through any Dm chords with the number 1. Any Gm chords become 4 and the Amaj becomes 5.
And then we bass players because we play notes of the chord - and the chord is made from scale notes - we would have to use the
Harmonic Minor box pattern instead of the Major scale box pattern - because the 3rd and 6th are lowered that 1/2 step.
Major Scale Box.
G~~|---2---|-------|---3---|---4---| 1st string
D~~|---6---|-------|---7---|---8---|
A~~|---3---|---4---|-------|---5---|
E~~|-------|---R---|-------|---2---|4th string
Harmonic Minor Scale Box.
G~~|---2---|--3---|-------|---4---| 1st string
D~~|-------|-------|---7---|---8---|
A~~|-------|---4---|-------|---5---|---6---|
E~~|-------|---R---|-------|---2---|---3---|4th string
You do not have to use box patterns all that is necessary is you remember to lower the 3 and 6 a semi-tone. The Harmonic Minor box does that for me - so that is what I use. If you use something else keep using it.
Anyone that does use Nashville numbers with minor keys chime in. I've never done it before. Pounding out roots no problem, however playing chord tones bass lines in Harmonic Minor from Nashville numbers; I'm winging it here......
With a
major key say my fake chord has a 4 and now I have a choice. I can pound out roots or do a R-5-8-5 or a R-3-5-7, because I know where the other chord tones are located within the box. I mentally move the box and I know that from the root a 5 is always up a string and over two frets, or down a string same fret. Same with all the other chord tones, I know where they are in relationship to their root note. Taking that to Harmonic minor I'll have to take into account the 3 and 6 being a semi-tone lower. As the only difference in the major scale and the Harmonic minor scale is the 3rd and 6th scale degree are lowered in the Harmonic minor scale -- this does not have to be rocket science. Just something I would have to get used to.
Nashville numbers work great when you are strumming a chord, or pounding out roots. However when playing chord tones in a bass line you have to combine Nashville numbers and chord tone scale degrees. I do it all the time with Major keys. Minor keys I'd have to get comfortable with them as they are not part of what I now do. Country and Praise is what I normally play and Country and Praise is almost always in a major key.
Here is what one of the experts have to say about NNS. FWIW I transpose all my fake chord over to Nashville numbers. NN work for me, see if it does for you.