The House of Song was the guildhall of the Council of Musicians, Instrument-Makers, and Choristers in Waterdeep. It was located in the city's Trade Ward, on the corner of Coach Lamp Lane and Carter's Way. Inside, two adjacent columns were paler blue than the others, and there was an old elven song etched near the ceiling here. If the tune was played, a gate to Wyllowwood in Undermountain woukd open between the columns.