Feature Request: Tag Update Tag Referencing

[simoncn]

I think your solution is workable but I don't understand why you have chosen Compilation for the tag name. As I understand it, the added tag value would be a list of composer names. By convention, the Compilation tag is effectively a boolean with 1 indicating that the album is a compilation. Rather than reusing this tag name for a completely different purpose, I think it would be preferable to create a new tag such as TitleComposer.