I saw it twice, you need to see it: People Who do Noise by Adam Cornelius

Noise may not be to everyone’s taste (in fact by definition noise is classed as “unwanted” sounds) but to the hardcore few it’s a way of life. This documentary follows some of those artists and shows them performing live, often on homemade or radically modified kit, and talking about the philosophy and influences behind their work. You won’t have heard of many of these performers but that’s the point – they are not in it for fame or money, they are simply following their muse in as unhindered a way as possible.