Nickel Creek, the American acoustic trio known for its contemporary bluegrass and indie rock music, will hit Pier Six Pavilion during its Farewell (For Now) Tour at 7:30 tonight. Fiona Apple will also perform. The pavilion is at President Street and Eastern Avenue at the Inner Harbor. Tickets are $22.50-$37.50. Call 410-547-SEAT or go to tick etmaster.com.