Stereolithic, 311’s first indie release since 1991 and a reunion with Soundsystem producer Scott Ralston, marks a return to the airy midwestern reggae-rap-alt-rock casserole and insouciant swagger that characterized the sangfroid of ’90s dot-com bubble backbeats. The album retains the rosy retrospection of diffuse power chords and frontman Nick Hexum’s diaphanous tone, but explores headier themes: climate change, wretched excess, and scattershot existential rambling. Yet when Hexum sings, still as refreshing as an ice-cold Zima, “I’m like the ocean, too calm to get upset by somebody’s notion,” we remember that we don’t really care if still waters run deep.

Sat., July 19, 6 p.m., 2014

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