CINCO DE BETO Check out these pivotal tracks from Martinez’s diverse catalog

“SE CAE EL SOL” THE LOS SUNDOWNS, THE LOS SUNDOWNS (2021)

Se cae el sol translates roughly as the sun goes down, so it’s clearly a kind of theme song for Beto’s cumbia-tinged psychgarage band of the same name. Blending a funky Latin beat with spaghetti-western–approved bell-like tones, the track is based on a I-IV-V progression in

Bm–Em7–F#dom7 harmonic minor — — over which Martinez flows slinky blues-scale and harmonic-minor ideas with a classic spring reverb–soaked tone courtesy of a vintage Fender Super Reverb.

“INTO THE VOID” BROWN SABBATH, BROWNOUT PRESENT BROWN SABBATH (2014)

Even Ozzy was gobsmacked by the originality and sheer badassery of this horn-blasting take on the early Sabbath epic. Like the original, Martinez tunes his entire guitar down a minor third — C# that’s a hellspawn on the E string, yo — for the song’s sinister main theme, a chromaticassisted blend of blues, tritones and Locrian mode that’s doubled by Brownout’s full horn section. And that blistering fuzz? That’s a Plum Crazy Fuzzy Lady pedal, a unique hybrid fuzz that uses both silicon and germanium transistors.

“CUMBIANCHERA” GRUPO FANTASMA, EL EXISTENTIAL (2010)

This infectious chunk of post-modern cumbia helped Martinez and Co. win a Grammy in 2010, and not just because of its chugging saxophones and soaring trumpet blasts — think Bond composer John Barry married to Fela Kuti–inspired rhythm guitars. Based around a typically Latin Dm–A progression, it’s a natural vehicle for Beto’s rhythmic upstrokes on the offbeats, and his lovely solo starting at 2:02 mixes natural minor and blues-scale ideas with plenty of psychedelic garage dirt thrown over that vibey Fender clean.

“ANDO Y DANDO” BROWNOUT, OOZY (2012)

If you dig serious conga grooves, you’ll love Brownout’s furious jazz-funk on “Ando y Dando,” with its cool I–bVI7–V7 progression (Fm–Db7–C7), that tips its hat to similarly smokin’ live bands of yesteryear like Irakere and Santana. Martinez’s solo, hitting at 2:20, kicks off with some wickedly fluid wah-wah licks that dance around both the flat-seventh and major-seventh in a pentatonic framework, launching into a flurry of dubby echoes that recall the fiery and fierce classic Carlos of live albums like Moonflower.

“ECHO EN MEXICO” MONEY CHICHA, ECHO EN MEXICO (2016)

A clever twist on the phrase hecho en Mexico, this swinging six-againstfour feel features Martinez playing a slinky, lightly chorused pedal-tone hook in C harmonic minor over a Cmin–Fmin–G7 progression. His solo work here, though, leans more toward the kind of Zimbabwean pentatonic style that players like Jonah Sithole and Leonard Chiyangwa let fly in Thomas Mapfumo’s legendary bands. Throw in some classic garage-psych bends and high, piercing echo blasts (i.e., “echo” en Mexico) and you’ve got another eclectic and stylistically rich new hybrid from the Lord of Lechehouse.