Ringo Garza Sr. and his three sons didn’t get anywhere when they came to Nashville in the ’90s; Ringo Sr. aspired to a country-singing career in the vein of Freddy Fender. But if they’d stuck around, the three younger Garzas (Henry on guitar, Jojo on bass and Ringo Jr. on drums) might’ve found their own band nudged toward the influence currently favored in contemporary mainstream country — late-’70s and ’80s arena rock — instead of the Santana/Jimi Hendrix/Stevie Ray Vaughan territory where they’ve made their home. The trio — Los Lonely Boys — ultimately launched from tiny San Angelo, Texas, and not-at-all-tiny Austin with a boost from Willie Nelson, drawing liberally on their love of classic rock. The brothers even released an EP, 1969, covering the Beatles, the Doors and Santana. Rockpango is their fourth full-length studio album and the first on their Lonely Tone imprint. It proves that the most dynamic part of what they do isn’t their singing or songwriting, but their playing; the title track’s tenacious Texas blues shuffle is a case in point.