Display of tag original artist

[karu]

Hello,
I have some album tagged with artist, album artist AND original artist (German:"Originalkünstler"). EasyTag displays this tag, but in GMB I can't find this. Especially for the search this would be very helpful.
Is there any way to add/display original artist in GMB?
Composer is  diaplayed in the panel, but not in the search function. Is there any way to search for compser?

Thx a lot