Inharmonious/discordant. Like fingernails on a chalkboard. Relentless Harsh. Cacophony I expect some adore it thrive on it and think it is exquisitely beautiful. It hurts my ears. Run away from it as fast and as far as possible. Not my cuppa tea but for some perhaps soothing calming relaxing mystical.
No accounting for the eye of the beholder or the ear of the hearer is there? What some think of as precious and fine others think is grotesque. Go figger!