_________ (Recipient details)
Subject: Apology for noise
Hello mom, I hope you are doing good I am also good here. I write this letter in concern to the noise that was being made by me and my friends at our home. My friends came home for a sleepover and we were enjoying it but we didn’t notice that the music was so loud that it would disturb your sleep/neighbours would complain. And also ___________ (mention your point).
I know that this cannot be undone but I sincerely apologize for the same and request you to kindly forgive me. I love you and I promise that I won’t repeat the same thing again.
Your loving son/daughter,
___________ (mention your name here)