Drew is consistently moving through his different "maps" and is doing well. Yesterday we tested his hearing ability by having Drew's Mom sit behind him and make the "Ling Sounds". These sounds are 1) "aaah", 2) "oooh", 3) "eeee", 4) "mmmm", 5) "ssss", and 6) "shhh", and are supposed to represent the sounds that one needs to be able to detect to hear speech properly.
Here is Drew hearing the "Lings":
We were excited to see that Drew clearly responded to most of them and seemed to respond to the others when the sounds were made at close range. We will keep moving farther and farther away to monitor how well he is hearing, but this is a great start!