Import action

Create a textfile, e. g. "X:\Folder\Textfile.txt", with following lines e. g.:
^|1|Introduction|The Tell Us|Z:\Music\Artist\Album\Musicfile1.mp3|$
^|2|Five To One|The Doors|Z:\Music\Artist\Album\Musicfile2.mp3|$
^|3|Break On Through|Beton & Breaker|Z:\Music\Artist\Album\Musicfile3.mp3|$

Select the three tracks, then use Mp3tag/Convert/Text file - Tag:
Filename: X:\Folder\Textfile.txt
Format string: ^|%TRACK%|%TITLE%|%ARTIST%|%_PATH%|$

Please read there ...
Import tags from text file
Importing Lyrics From Text Files
Text files export/import, with 1 text file by folder

DD.20091212.1111.CET