On the follow-up to 2012’s Last Summer 7-inch, Travis McGuire and company amplify their preposterous power-punk in showcasing furious musicianship on minute-long roller coaster “Let’s Get Ripped” and toying with tempos to re-create the sound of an atomic bomb on the title track. Imagine Canadian noise trio Metz harnessing silliness instead of nervy aggression. They’ll never be Austin’s most famous octo act, but Octopus Rex always sound like they’re having a blast.

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