Good one! In my head i only hear ringing whole day long. I've had tinnitus for many years. People tell me to do things like meditation and relaxation techniques for me stress, but that's when it gets, or seems like the loudest. The only temporary fix I've had is going to the beach every week and hearing the ocean waves which is louder than my tinnitus but doesn't always cancel is out completely. Going to visit audiology clinic and see if they might have some useful tips for me.
Not sure if classical counts but this theme has been in my head lately, kind of peaceful and meditative
I've been having Ain't No Grave by Johnny Cash playing in my head for the past two mornings now. I normally listen to Electronica and Ambient, but I find this song relatable from time to time.