How to retrieve id3tag data from all the files and concatenate a word to their values and add them back in ubuntu via commandline?

Question

I would like to retrieve the id3tag namely artist, album, albumartist, title tags of all mp3 files under a directory. There are lots of files, so can't edit each of them. How do I add a word, that is concatenate a word to already existing tags. The way I think its possible is to retrieve the tag, concatenate the tag an string , and replace the original tag with the concatenated tag. How to do this in ubuntu with commandline?