This time i think you excelled. I have read "The Fun House" and i liked it but "The Sound" is even more developed in many ways.
i liked the pace most, also the characters, the leading character Fred Ryan who is both funny and smart but doesn't try to show off in any way, i like the funny tone of the accidents.
The theme is very interesting and at some points i was eating through words to know what happens next. And it made me laugh.
By all means, Keep writing Tom.