The Sound Keeper is a woman who keeps all the sounds made in the world filed away in alphabetical order in her fortress, which is like a mansion. She is an elderly woman in a black dress and pointed hat.She likes music and silence too.she is like a witch
She is quite kind and hospitable and very neat. She likes music and also silence, which she 'listens' to. However, she also talks a lot, which Milo finds ironic. She hates sounds which she considers unpleasant so she locks them up, along with unneeded sounds, which take on physical form in her fortress. However, a few years ago, up until the events of the book, she decided to lock up all sounds, regardless of whether she found them unpleasant or not, and nobody knows why, although there had been speculation that it was either the weather, something to do with the moon, or the absence of Rhyme and Reason, the latter theory being supported by the fact that the Sound Keeper had started behaving oddly around the time the princesses were banished.