Also known as wrock, this subgenre of rock music can basically sound like anything from punk to heavy metal to indie rock. The one requirement is that lyrics focus on the Harry Potter universe. When Massachusetts duo Harry and the Potters hit the scene in the early 2000s, most people probably thought the music was a passing fad. But in the years since, according to Wizrocklopedia, there have been over 800 registered wrock bands.
Top 10 Ways Harry Potter Will Live On
For the Boy Who Lived, the story is now over. But fear not: TIME takes a look at the ways the wizard will live on even after the "Harry Potter and the Deathly Hallows Part 2" credits roll