- Ask them politely. It's possible they're unaware of how loud or disruptive they're being. Simply asking them to keep their voice down or sing somewhere else may be enough to solve the problem.
- Mention any rules or regulations. If you live in a community with noise restrictions, you can remind the person that they're violating the rules. You may also want to mention any potential consequences, such as fines or eviction if they continue to make excessive noise.
- Offer them an alternative. If the person is singing because they're bored, you could offer an alternative. Suggest they put on some music, watch a movie, or play a game. This will give them something else to do and may help them forget about singing.
- Block their hearing. If all else fails, you can try blocking their hearing. This could involve wearing earplugs or moving to a different room.