Conservatory (Luigi's Mansion)
From the Super Mario Wiki
The Conservatory is a room cleared in Area Two of Luigi's Mansion.
After procuring the Key from Shivers in the Butler's Room, Luigi gains access to the Conservatory, where he finds many instruments. Checking each one will play the Super Mario Bros. theme until all the instruments sound together in perfect harmony. Once all the instruments have been checked, Melody Pianissima appears at her piano, where she asks Luigi one of two trivia questions. When he answers correctly, Melody will send music sheets to attack him. When they are sucked up in the Poltergust 3000, Melody exposes her heart. After Luigi captures Melody, the lights turn on and the Key to the Dining Room appears.
The Conservatory is a music room which houses a variety of musical instruments. The instruments consist of the following: a saxophone, a harp, a cello, three kettle drums, a xylophone, and a grand piano. All but the grand piano can be activated, causing a tune to be played.
Ghosts in The Conservatory during the blackout
Names in other languages