According to Shivers heart, he has a crush on Melody. Melody appears to lose her temper easily like when Luigi guesses her music playing wrong. Melody's biography also says that she has a passion for video games. Melody died at the age of twenty-six. Melody appears to be a ghost with long blonde hair, a pink dress, yellow eyes, and a light-blue body.
When Luigi at first enters the Conservatory, he must turn on all of the instruments which makes the Super Mario Bros. theme song all together by mainly being heard by the piano in the Conservatory to summon Melody to come out and to see her play the piano. Melody then asks Luigi a question on which song she is playing, being either the underwater theme of Super Mario Bros., or the athletic music from Super Mario Bros. 3. If Luigi guesses wrong, he must re-enter the room and repeat the steps. When Luigi guesses right, Melody says he is correct and then starts haunting Luigi with music notes from her piano which follow him via levitation and Luigi must suck it up with his Poltergust 3000 to upset Melody and suck up her 100 HP to turn on the lights in the room and gain the key to the Dining Room.
- Before Area Two is completed, when Luigi is close to the Conservatory, he can hear Melody play the piano. Even after Melody is captured, it can still be heard before Area Two is completed.
- Before Melody was the main mini-boss in the Conservatory, there are pictures of ghosts there were originally supposed to be mini-bosses, but they did not made it to the final version of the game.
- Her last name "Pianissima" is a pun of "pianissimo" meaning "very soft" in music.