Tier list based on Soundtrack
Nightreign surprised me, not only by the amazing game but also with the soundtrack, every theme fits with each nightlord perfectly. Dreglord has my favorite boss OST of all time. Dark souls 3 comes in a close second, not much to say. It has the best main menu theme. Amazing soundtrack overall.
Then comes Bloodborne and Elden Ring tied, both of these games each have some of Fromsoft's best music. But they also come with a lot of forgetable songs in between.
Dark souls 1 and demon's souls have very good music for their time, before having any real orchestral performers. They both have the best character creation music alongside the occasional bangers.
Bell gargoyles, Sif, Kalameet, Artorias
Tower knight, Maiden Astrea, main theme, tales of old. ps3 version btw.
Dark souls 2 and sekiro each only has a handful of good songs in my opinion. Majula standing out and alone. Sekiro music lacks melody and instead focuses on noise and action. Only one I could mention is Demon of hatred.