What this site is for
Cavaquinho Warrior covers one instrument: the cavaquinho, four single steel strings tuned D–G–B–D. That is the whole subject. Because it is the whole subject, every page can assume the batida — the repeating chop of down strokes, up strokes, and mutes that is how this instrument states rhythm — and write from there. A site that also had to explain fingerstyle, bowing and flatpicking could not put the mute at the centre of every chord page the way this one does.
The same narrowness is why the cells get their own engine here and chords do not get a strum-pattern afterthought. It is also why a cavaquinho page is the wrong place for most questions that are not about a cavaquinho. Pointing you at the site that owns the question is more useful than a thin section written here for completeness.
Where to go instead
String WarriorOne instrument at a time is this site's entire method; there the same chord is drawn on twenty-odd necks at once, which is how you find out what a D–G–B–D voicing turns into everywhere else.
Theory WarriorA batida tells you which eighths get struck and which get chopped, but not why a turnaround's chords pull at each other the way they do; that argument happens there, with no fretboard in the way.
Keys WarriorFour strings on the beat is one way to hold a dance music's harmony. A pair of hands is another, and the seven instruments there differ precisely in how many notes they will let you hold down at the same time.
Ukulele WarriorThe nearest cousin in the network: retune a ukulele to its Chicago D–G–B–E and three of its four open strings match this instrument's own D–G–B exactly, with only the top note telling the two necks apart.
Bass WarriorThe batida's dance partner: in a samba group the bass answers the chop from underneath, and hearing that half of the conversation is what that site is for.
Mandolin WarriorA different answer to the same problem of a note that will not sustain itself: a mandolin holds one by tremolo-picking it fast, while a cavaquinho holds a groove by chopping part of it into silence on purpose.
Guitar WarriorSix strings played mostly in sustained blocks, and where many cavaquinho players' first chords came from; go there to see what the rest of your fretting hand already knows how to do.
Banjo WarriorThe network's closest tuning kin: a 5-string banjo's open-G main strings carry the same four pitch classes as this site's D–G–B–D, though its extra drone string is a fifth voice this instrument has never had.
Fiddle WarriorBowed, fretless, and built to carry a melody clean through a chorus — the top line a choro flute or fiddle floats over the chop belongs to that site's fingerboard, not this one's frets.
Ear WarriorChoro moves through its changes faster than reading allows; you hear the next one coming or you do not. That site drills the eight loops and the sixteen qualities until that recognition beats thinking.
Bluegrass WarriorA whole ensemble covered seat by seat — a different repertoire and a different country from the roda, but the closest thing the network has to how a samba group divides its own labour.
Music Warrior NetworkFour strings on the beat is one way into a dance music's harmony; that site is the map of the other ways the network offers — each sister's subject in a sentence, and whether it is open, so the harmony itself can be studied where it lives.
Nashville WarriorThat page tells a band what to play and nothing whatever about when to hit it. Choro is the music where the when is the style, so the two make a clean pair: one stores the harmony, the other scores the stroke.
Mariachi WarriorA small instrument whose job is the pattern rather than the tune, in a group with no percussion. Both sites score the cells instead of describing a feel — every slot, every slap, every rest declared.
Jazz WarriorChoro and that repertoire grew up doing the same thing: a memorised tune, a fixed set of changes, and everybody improvising against them. Its harmonic vocabulary went further, and it maps onto this instrument more directly than it has any right to.
Country WarriorBoth musics answer the same question: who keeps time when nobody is on a kit. Country splits it into a standing part per chair with the rests declared — a second way of writing down the same silence.
Tres WarriorThe closest sister in function anywhere in the network: a small doubled-course instrument whose job is to put harmony on the beat for a dance music. Samba's answer and son's answer sound nothing alike, and that is the point.
Sitar WarriorChoro and samba put the cavaquinho's chords on the beat and build upward from there; a sitar performance begins unmetered and only later finds its cycle — the network's clearest look at rhythm as something a piece arrives at rather than starts with.
Oud WarriorChoro's melodies are as ornamented as anything in the network, and the cavaquinho's job is to put chords under them on the beat; the oud plays that ornamented line itself, unaccompanied and often unmetered, which is a different way to be virtuosic.
Cuatro WarriorTwo small four-string instruments holding up a national dance music from underneath, an ocean apart. The cavaquinho and the Venezuelan cuatro are the closest functional twins in the network, and they sound nothing like each other.
Charango WarriorYour right hand is written eighth by eighth; theirs is written as three repeatable cells with the rests scored as carefully as the strokes. The same conviction that the driving hand is the subject, reached from the other side of the continent.
How the sites divide the work
Each instrument family has exactly one home, and kinship follows strings and tuning rather than geography or body shape. The cavaquinho claims only itself: its shared pitch classes with the banjo's open G and the ukulele's Chicago tuning are real and worth naming, but neither sister owns any part of this instrument's home, however close the numbers land.
String Warrior is the one site that does not work this way. It carries every instrument at once, which is what lets it lay the same chord across twenty necks side by side — something no single-family site here can do, and the reason this one does not try.
More sites are still being built, and each will join the list above the day it opens — not before, since a door onto a site that cannot be read yet helps nobody.