Foster the People @ Summerfest

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When MGMT refused to fill the demand for catchy, buoyant psych-pop that they helped created with their 2007 album Oracular Spectacular and its ubiquitous hits, a bunch of other bands stepped in to capitalize on the opportunity. Among the most successful was Los Angeles’ Foster the People, which scored a big crossover hit in 2011 with the MGMT-esque “Pumped Up Kicks,” a song that helped shift alt-rock radio’s interest away from guitars and toward loose, happy grooves. Last year, the group released its third album, Sacred Hearts Club, which adds a more pronounced electronic influence but keeps the perky pop vibes.