A network of auditory cortex nerves (the corticofugal network) helps with the recognition and cataloguing of the different audio patterns.
If a pattern matches with a familiar one already in the brain, it releases dopamine, which is the main reason why (your favourite) music is so emotionally intense. Sounds are pleasurable because they match something already inside us.
People can get angry, even riotous when they are presented with something they don’t know or recognize.
Much before the phrase ‘confirmation bias’ became mainstream, most of us have been practising it in the things we like, be it clothing brands, beauty ideas or music. We all are trapped in the echo chambers where we love the things we know well, just because they are familiar, and therefore lovable.