The melody is Hedwig's Theme, the main theme from the Harry Potter films first heard in Harry Potter and the Philosopher's Stone in 2001, composed by John Williams. Online, badly played recorder covers of famous themes became a popular joke format, where instant recognition makes every wrong note funnier. This sad fail version leans into that idea, turning a theme linked to wonder and Hogwarts into a soundtrack for letdowns. It is still used in fan edits and memes because the tune is so familiar that the failure lands immediately.