The sounds of bonfires, waves and rainfall are making millions

"White noise is the music industry’s next big thing. Streaming services have seen an explosion of tracks in the last year consisting entirely of hissing, humming, fizzing and other varieties of radio static, as well as recordings of rainfall, ocean waves and crackling bonfires. Some of the recordings have earned their creators millions of pounds. Record companies and tech firms have taken notice" - Guardian is looking into the interesting phenomenon.