Adding tags to music to create a smart playlist that contains that tag

Issue description:

Can I add tags to MP3 music on PC using MP3tag, so that I can transfer MP3 music from PC to mobile (for Symfonium android app) and auto create smart playlist in symfonium that contains only songs that have ‘tag name’? I have tried this with a song to see if it would work, but symfonium didn’t recognise the tag (most likely because I did it wrong). What type of tag is best to change so that Symfonium can pick up the tag?

Logs:

Upload description: Not sure how to get details of MP3 files re tags

Additional information:

 

 

Reproduction steps:

 

 

Media provider:

Local device

Screenshots:

     

Yes you can and all the supported tags are documented