Miami's hipster concertgoers are pretty lax when it comes to buying tickets. Indie shows rarely sell out here. So a lot of people were left shocked in their skinny jeans when tickets for Cut Copy's September show at the relatively cavernous Grand Central were gone early. That's because it wasn't just hipsters buying tickets. Cut Copy seems to be one of those groups whose popularity cuts across the city's very separate scenes. Apparently the Australian band's dance-friendly electro-rock moves the feet of South Beach house heads, Kendall kiddy ravers, Brickell yuppies, people who wear sunglasses in clubs even when they're sober, your mom, your hairstylist, your mom's hairstylist, that chick you kind of dated but dumped because she had a laugh like Fran Drescher — you know, just about everyone who doesn't get all of their music direction from Y100. So the band added a second show the day before, which is a rarity in Miami. And it was worth it. Opening acts Midnight Magic (disco revivalists with a horn section and last summer's hottest indie club jam) and Washed Out (chillwave OGs) set the tone, but Cut Copy whipped both nights' crowds into an ecstatic frenzy with hits like "Lights & Music" and "Need You Now." The experience left audiences wanting more, and probably ensured that tickets will sell out even faster the next time the band comes through town.