Big Grams Brighten Alt: Big Grams grow 35-33 on the Alternative airplay chart with "Lights On" (Republic/Epic). While it's the act's first charted song, its members, rapper Big Boi and electronic-alt duo Phantogram, are veterans of Billboard's tallies. The hypnotic track is from Big Grams' self-titled debut EP, which bowed at No. 5 on Rap Albums, No. 9 on Alternative Albums and No.

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