Customising "Album" tag... (TagValues)

[audio_elf]

My classical music is all stored with the "Album" tag as per the original CD. I also have a ContentGroup tag set to Composer: Composition.

I've been exploring the Aries Lightning DS control point and using the "library" view this doesn't quite work to my way of working any more.

I was hoping to use the replace 'tagValue' property to replace the original album title with the ContentGroup tag but
Album.replace={ContentGroup}
gives an error saying "incorrect tag 'Album' for for option 'replace' in property 'tagValue'.

Is there any way to do what I was wanting to?

Eloise

PS. yes I know I could use mp3tag to change all the tagging.