The Singing Neighbour

Inspector Chautala arrives to see that everyone in her office is asleep. Soon, a hard-working gentleman comes with a complaint that he is sleepy. On further questioning, the Inspector finds that this man who works from 6am in the morning to 5pm is unable to sleep at home because his neighbour is a professional singer and practices all night. The singer is called to the police station and it is found that she is a famous singer "Quatilana Banno" How will the inspector handle the case?