Legendary slide-guitarist Sonny Landreth has been working steadily for decades, amassing a devoted following among his fans and peers. Eric Clapton said he is "probably the most underestimated musician on the planet and also probably one of the most advanced." Indeed, as Landreth's way of playing is unmistakably his own - his method combines the bottleneck slide, palm and finger-picking techniques that produce a sound that is often said to resemble many instruments playing at once. Mato Nanji's always provided the heartbeat of the band Indigenous -- along with the warm dusty voice and the soaring, spirited guitar fireworks that have earned the group from South Dakota's Nakota Nation a place among roots rock's elite. But with the emotionally charged and musically visceral Broken Lands, the band's second album on Vanguard Records, Nanji makes a transformation from sparkplug to visionary.