“Harry Potter” star Daniel Radcliffe says that he prepared for his new role in the supernatural thriller “Horns” by listening to heavy metal music.

In “Horns”Radcliffe plays Ignatius “Ig” Perrish, a 26-year-old guy who wakes up to find horns sprouting from his head. And to help him unleash the demon within, Radcliffe turned to rock music.

“I’m listening to a lot of metal and allowing that slightly demonic rock ‘n’ roll spirit out. There’s nothing else like it,” the 23-year-old actor told The Sun.

Radcliffe previously described his new role as “deeply emotional and also incredibly outrageous in some ways.”

He added: “To play somebody who, in the midst of a time in his life of great turmoil anyway, undergoes this horrific transformation into a devil character — it was very, very exciting.”

Based on the novel by Joe Hill“Horns” was directed by Alexandre Ajaand written by Keith Bunin.