Police officers were surprised early Tuesday morning when they kicked in the door of an Amsterdam man they thought was in trouble and shouting, only to discover he was actually trying to sing along with an opera recording. The man was enjoying his music wearing headphones, and did not notice the police at his door.

The police were responding to an emergency call placed by a neighbor, who suspected the man was the victim of a violent domestic crime. The tipster told the 1-1-2 dispatcher he “heard a terrifying scream from the house,” police said on Facebook.

When police from the Amsterdam Zuid-Buitenveldert district arrived on the scene, they also heard screams from inside the home. The resident did not come to the door until after officers kicked it in, police said. He was alone inside at the time.

“In the end, the [police] colleagues, the tipster (worried neighbors) and the resident had a real laugh about the incident,” police said. The case was referred to the department’s legal affairs division.