'Voices' in the Bible

Then it happened on the seventh day that the child died. David’s servants were afraid to tell him that the child was dead, for they said, “While the child was still alive, we spoke to him and he would not listen to our voices. How then can we tell him the child is dead, since he might harm himself [or us]?”

As soon as he had finished speaking, behold, the king’s sons came and lifted their voices and wept; and also the king and all his servants wept very bitterly.

I am presently eighty years old. Am I able to discern good and bad? Can I taste what I eat and drink? Am I still able to hear the voices of male and female singers? Why should I continue to be a burden to my lord the king?