I have seen this movie many years ago and I’ve been trying to remember more about it, but to no avail.

I’m pretty sure it is american and in color (but could be b&w).

In this movie there is a boy that seems to be on a strange world.

There’s a ruler there who is a bad guy and controls people with sound or something like that.

I recall 2 particular scenes:

1 – The bad guy shows a torture chamber where there’s someone beating an enormous drum on a back wall. He explains that the guy is being punished for something. The boy asks something and the bad guy tells that the one being punished is in fact inside the drum. A light is turned on behind the drum and you see someone inside.

2 – The boy is locked somewhere with someone who uses an hearing aid device. He crushes the device into small pieces and puts it inside a bottle (air freshener?) and closes it. When he opens the bottle, the bottle collects the sound around them and that’s how he eventually beats the bad guy.

I’m pretty sure I haven’t dreamed this. Anyone can help?

Thanks.