Well-known and up-and-coming alternative-rock performers play at this very hip place. There are several sets a night. Nightly 6 pm-4 am. Tickets US$8-$20. Purchase tickets at the box office Monday-Saturday noon-7 pm or through TicketWeb. For shows with no advance sales, doors open one hour before the first band takes the stage. 217 E. Houston St., between Essex and Ludlow streets (subway line F to Second Avenue; J, M or Z to Delancey-Essex Street), Manhattan, New York City. Phone 212-260-4700. http://www.mercuryloungenyc.com.