Martha was a teller in a bank and had to go to bed early in order to be at work by 9 am. She was lucky to get 5 hrs. sleep with the biker's late night radio. Her complaints to him failed and to other neighbors (they were all intimidated by this muscle bound heavyweight). The building's owner lived in Europe. The Supt. lived in a basement apt. and tried to intervene without success. The bully told Martha she could move; he wasn't about to lower his noise when he finished a 12 hour hard day’s work constructing buildings.
I was hired by Martha to solve the problem. I learned she had called the police a few times, as had other tenants on her floor. When the culprit saw the flashing lights he toned down the volume, then raised it higher when they left. The cops weren't sympathetic, being too busy with bank robbers, rapists, muggers and jewelry thieves.
My solution was for Martha to rent a 28 inch bass drum with a wooden mallet. Then when the loud music began, she would keep time with the bass drum, hitting the instrument triple forte, claiming she had to " practice for joining a Salvation Army Band." It was 1 am when she started pounding to the music. Within minutes the whole building was awake, tenants yelling on their floors and fleeing to the lobby. There were many 911 calls.
Two police cars arrived and settled the situation: "NO NOISE AFTER 11 PM OR FACE ARREST, FINES AND EVEN JAIL TIME.” Subsequently, you might hear a door slam after 11 pm, but nothing louder. A month later the offensive biker moved out. Mission accomplished!