I'm taking "new music" to mean "any music you haven't heard before", so I'll mention these YouTube channels:
- Harakiri Diat uploads a lot of recently-released songs and albums in punk and punk-adjacent genres.
- Ultradiskopanorama uploads a lot of old and obscure disco, funk, synthpop and similar, particularly from the Eastern Bloc and Asia.
- Peđa Radović uploads a lot of old music from Yugoslavia.
- Music Ocean uploads retro albums, mostly from the USSR.
- Planet ASE (formerly "Are Sounds Electrik?") uploads obscure electronica-type music and other curiosities, most of it old but some of it new.
- KEXP uploads a lot of live performances by music acts that are niche, maybe up-and-coming or maybe already popular in their country of origin.
- THE FIRST TAKE uploads a lot of live performances of J-pop and anison.
There's also the ol' reliable of just listening to the radio. Or rather, I use a program on my computer called Shortwave to listen to radio stations from around the world. My go-to is {Радио|Radio} {Кавказ|Kavkaz} {Хит|Hit} (https://kavkazhit.hostingradio.ru:8017/kavkazhit96.mp3), which Shortwave calls an "orphaned station". I can still listen to it without issue but I guess "orphaned" means that if I were to delete Радио Кавказ Хит from my library then I won't be able to add it back. Радио Кавказ Хит is based in Southern Russia (Northern Caucasus) and plays pretty much exclusively folk pop from that part of the world, in any case. The cool thing about Shortwave is that it records all the songs you hear, so you can easily download them.