Nothing has really changed I think the monsters were updated in appearence. You only need music if you can't see him because if you see him there are some very obvious signs of which attack hes going to use. Theres alot of different things you can do about healers one is just to ignore them as long as they are all trying to attack but only can acually hit you, or run so jad can't hit you then kill the healers one by one and if you are using guthans heal yourself. Last you could just see if you can kill Jad without killing them.