as you know Wine on Mac doesn't work with Catalina 10.15 and I didn't check with Big Sur.
I started to use VirtualBox (slow), Vmware Fusion (slow, sound card on guest not working, graphical glitches in Unity), Parallel Desktop (fast, great in Coherence but expensive).
Right now I paid 10€ for a Win10 Home license and searching for a discount to buy Parallel...just to run MP3Tag!!!
So, please, give me (even a paid version of) MP3Tag native app for OSX