Aidin Vaziri | Flume is Australia’s biggest electronic music export and remixer to the stars. He has turned songs by the likes of Sam Smith, Arcade Fire and Lorde into wobbly, narcotic down-tempo gems. The 24-year-old producer, born Harley Streten, scored a hit with his self-titled 2012 debut album, which went double-platinum back home and earned him top ranking at festivals like Lollapalooza and Coachella. On its follow-up, “Skin,” Flume embraces his crossover appeal, recruiting guests like Beck, Little Dragon and AlunaGeorge while hanging on to the weirdness that sets him apart. There is a broader range of tempo and emotion here, with more focused melodies and vocals — and less introspection all around. It doesn’t carry a consistent mood like the debut, but the potential for breakout hits ramps up significantly, from the album’s big hip-hop moment, “Smoke & Retribution,” featuring Vince Staples, to its lush pop single, “Say It,” featuring Tove Lo.