Rihanna, Shania Twain, Mumford & Sons, and Elton John. That's not from the playlist of an indecisive radio DJ—it's from the song list at Radio Star Karaoke, which boasts more than 28,000 English and Spanish tunes. Visitors belt out melodies from nine private rooms, the biggest of which can fit up to 40 singers. Bolder singers exercise their pipes on the stage of the ultra-modern bar area, decked out with translucent plastic chairs illuminated by multicolored, club-style lighting. Dots of laser light flit across the entire space, framing wrap-around couches and flat-screen TVs. In the front hallway, a museum of vintage microphones and RCA Victor radios is on display to inspire singers. Fueling the festivities, which on some nights can last until 4 a.m., is a menu of spirited beverages and sharable appetizers that have all been stolen from Prince’s kitchen.