How to bulk move tag data to another tag?

Okay on a couple of occasions I have messed up on my tag data and this is usually for classical CDs. For example I import the Composer information into the Artist tag, whereas I actually want the performer in the Artist tag.

Is it possible to re-map or move on mass the data from say the Artist field to the Composer field?

Many thanks,


This is an example how to add something to an existing field. You must just change "Field" and "Format string" to your needs, like
Format string: %artist%

Thanks Dano