???? ???? ?? ?????? ??????? ?????? ?? ??????????, Wise Chord ???????? ??? ??????? ???????????????. ???? ?????? ?????? ????? ??????????? ???????????? ????? ???? ?????????? ?? ?????? DGX-660! ??????????? ?????? ?????? ?????? ????? ??????????????? ?????? ? ??????? ??????????. ????? Yamaha DGX-660 - ??? ???????? ????????????? ???????? ???????, ? ?????