The glow of flat-screen TVs and projectors dances in blues and whites off leather furnishings and acres of hardwood and brushed aluminum. At Nocturna Lounge, sharply dressed guests gain confidence as they belt karaoke classics and headbang over faux drum kits during games of Rock Band. The sprawling karaoke list includes time-tested numbers such as "You’ve Lost that Lovin' Feelin'," new songs from artists including Cee Lo Green, and obscure numbers from films including Team America: World Police. The melodies drift through an open lounge and four private suites, which shelter visitors during songs or rounds of Xbox games such as Call of Duty and Street Fighter, in which martial artists battle evil cobblestones. Customers even vie for prizes against members of Team Nocturna. In between each bout, barkeepers decant imported beers and specialty cocktails behind the icy silhouettes of a forest of bottles.