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https://www.mp3tag.de/en/ is a standalone batch tag editor

Picard lets you fix up mp3 tags nicely

Looks good thanks for the tip

Easy to use CLI tool https://beets.readthedocs.io/en/stable

foobar2000

Unfortunately foobar seems to have a hard time with some albums using freedb. It is an excellent application tho I'm always happy to see people mention it.