Dear Mr and Mrs White
Welcome to live here.I am your neighbor downstairs.You must be excited to be in a mew house.However,I think you shuold be quiet in the house.Because it's not only you live there,
but also other persons .As you know ,it's not polite to bother others.
So,I think you should turn down the music ,and get outside to play basketball .The place outside is more big ,isn't it?
Yours,
neighbor downstairs.