Any gems or methods for reading and writing meta tags of mp3 files?

If I wanted to have a site similar to bandcamp where I could upload MP3 tracks are there any gems or recommended ways to check the audio quality, and read/write meta tags to the files?

Indeed it is. As an update i ended up getting this all working with taglib ruby.

There are some free tools for that

mini_exiftool and exif gems for meta tags. I found exif less complete but faster. The gems use ExifTool (https://exiftool.org).