Extended field: Arranger

In classical music, pieces are often arranged or transcripted. Pieces may have different arrangements. To distinguish those an extended field Arranger would be helpful. Moreover for seeing relations, since the arrangers are often composers of different pieces (f.i. Schubert D810 and Mahler’s arrangement thereof for string orchestra). Now this information can only be stalled in the Comments field. May I suggest in the Extended fields a Arranger field?