The deeply emotional electronic pop of Phantogram revolves around Sarah Barthel's powerful vocals, which tower over their insistent, hip-hop-inspired left-field pop sound that's built on booming beats, washes of synths, and the occasional jagged guitar riff. Their early records, like 2010's Eyelid Movies, had a murky, trip-hop approach. Starting with 2014's Voices, they transitioned to an arena-sized sound that ended up on the radio and in video games commercials. They teamed up with Big Boi to form Big Grams and broke into the Top Ten of the Billboard albums chart with 2016's...