This is a matrix in the original sense of "source". It is a "small-world" network, meaning that the nodes (people) inside it are — mirroring human society — within a few steps of everybody else  inside it. The matrix was built to allow regional Brazilian musicians to be discoverable steps away from everybody else in the arts world, and by logical necessity this m.o. requires not only that the great Brazilians be matrixed, but so far as possible, all working artists in our time. Ergo:

THIS MATRIX, THOUGH BRAZIL-BORN, IS UNIVERSAL

THE MATRIX WAS BUILT HERE, inspired in (the kabbalah-inspired fiction of) Borges' El Aleph, that in the pillar in Cairo's Mosque of Amr, where the universe in its entirety throughout all time is perceivable as an infinite hum from deep within the stone...  The Brazilian "aleph" doesn't hum...it sings!

Sprawled across broad equatorial latitudes
Stoked and steamed and sensual in the widest sense of the word
Limned in prosody and cadenced song
brəˈzɪl / from "brasa" / Latin for "ember"

w/ David Dye for U.S. National Public Radio

Given the immense untapped power of the small-world phenomenon, from Brazilians the matrix was expanded to include nodes per jazz artists, given jazz's common roots with Brazilian music (nodes based in publicly available information; some artists we informed — Bob Mintzer, Kamasi Washington, David "Fuse" Fiuczynski, Vijay Iyer, Greg Osby — and got thumbs up, others we'll get to), and moved on from there. Artists/academics/"creative people" are welcome to create their own nodes and curate (connect to other artist nodes, so that others may follow). BTW, our logo is a cortador de cana, cane cutter. It was designed by Walter Mariano, professor of design at the Federal University of Bahia to reflect the origins of the music the shop specializes in.

MUCH MORE on all of this in the window below (which, if you are logged in, will instead contain instructions on recommending), and in the window within that window (which includes a "radio" called by The Guardian one of "10 of the best music radio stations around the world"):