CMUS not recognizing some files

Although these files are all tagged CMUS simply doesn't show them, the album and artist names are normal text, not symbols or anything alike. I use MusicBrainz Picard to tag my mp3 files and it shows me that all of my mp3 are tagged correctly. Is it ok if I upload one of the files in question to Mega and put here the link so maybe someone can check if it's the file itself or my Cmus? I didn't find anything related to this in the rules.