How to Solve the Hidden Puzzle in Notre Dame in Castlevania: Belmont's Curse

Castlevania: Belmont's Curse hides a fourth melody in Notre Dame that can be played even after defeating Death, and the Shadow Arcana spells hint at it without any ghost naming the keys. Players head to the Stained Glass Gallery, where symbols atop the windows match the Giant Organ's keys and the candles below give the sequence. The tune takes ten key presses, requires the double jump and dash power-ups, and is played on the Giant Organ starting from the Crescent Moon key.