Every other site in this network is about an instrument or about a way of playing one. This one is about a way of WRITING — the Nashville Number System, a shorthand for chords as degrees of a key, small enough to be produced in the minutes before a take and general enough that the same page survives a change of key without a pencil touching it.
That is an odd subject for a site, and it earns its own domain for one reason: nobody else in the network can hold it. A notation is not a technique, so no instrument site owns it. It is not abstract harmony either — the rules it encodes are conventions of one working practice, not facts about music — so the theory site does not own it. It had no home, and this is the home.
Additive, or it should not exist
The test a genre site has to pass is whether it adds anything. A site about a chart notation could very easily become a slightly worse chord dictionary with digits in the headings: the guitar already has an entire site to itself, and a summary of it here would be nobody's best page about the guitar — least of all this network's. So the subject here was chosen by subtraction: take everything the other sites already teach properly, remove it, and publish only what is left over.
The ledger, stated plainly, so it can be checked rather than believed:
- Guitar Warrior keeps the guitar. Every technique question, every alternate tuning, the whole family. This site says a guitarist turns a number into a shape, and stops there.
- Bass Warrior keeps the low end. This site says a bass player turns a number into a root, and reads a slash mark as an instruction. Nothing about how the note is produced.
- Keys Warrior keeps the keyboard. The piano reads more of these charts than anything else here, so it has reference pages of its own: chords, scales and keys by number, drawn on a keyboard rather than a fretboard to show what a digit becomes under two hands. How to play one, and every keyboard that is not a piano, stays with Keys Warrior, and every piano page here doors straight to it.
- Theory Warrior keeps the harmony. Why a dominant pulls home is theirs. That a chart writes it as a 5 and a room reads it in whatever key was called is ours, and the line between those two sentences is the whole boundary.
- Bluegrass Warrior keeps the room. The jam, the etiquette, who takes what and when — that is a band's social protocol, not a page of numbers. This site never touches it.
- Country Warrior keeps the song. Verse and chorus, the key a singer needs, and the part every seat carries against a named groove. This site never writes about song form or arrangement, and never about a capo.
What is left after all of that is the page itself: ten marks and what each one costs a reader who misses it; four real charts stored as digits and realized into concrete chords in any of the twelve keys; the twelve-by-seven grid a reader is running in their head between the count-off and the downbeat; and a drill that asks for all of it somewhere unfamiliar. No instrument owns any of those, which is exactly why they were homeless until this site existed.
Everything here is computed
Not one chord name on this site was typed. The charts are stored as bars of degrees with no key attached; the chords you read are derived from them on demand, and re-derived independently — from raw pitch arithmetic, by a validator that refuses to call the same functions the site does — on every commit. A wrong chord here is a failed build rather than a typo somebody eventually notices.
That discipline is not decoration. The entire claim of the notation is that a page of digits and a key are enough to produce the right chords, so a site about the notation that got a chord wrong would be arguing against itself in public.
The network
Nashville Warrior is part of the Warrior Network alongside String Warrior, the multi-instrument hub, and Theory Warrior, where the music theory this site leans on is taught from first principles.
Everything here is static, free and free of tracking: no accounts, no analytics, no third-party requests, nothing to dismiss before you can read a page. Your theme preference is kept in your own browser and nowhere else, which is the entire privacy policy. The bar boxes are built to be read by a screen reader in a sensible order and to carry their meaning in symbols rather than colour — see accessibility for the specifics, and for where to write when something falls short.