Andrei,

Is it possible to introduce a sub-title field to the title field for comments, ex;

Now: Title: Sweetheart Of The Rodeo <Bonus Tracks Edition>

As being suggested:
Title: Sweetheart Of The Rodeo; Subtitle: Bonus Tracks Edition.

Album Page:

The Byrds
Sweetheart Of The Rodeo (1997)
Bonus Tracks Edition.

Regards

Joe