"Where'd you learn to do this? Did you teach yourself? How'd you get so good?"
"..."
"....."
"The soul makes what it sees. Mine sees the sky. Yours sees something else. This is the way of things."
Baa was sort of an adoptive father for the Lamb. A man who lost his family, and someone young who never truly had one. What more could you hope for when you are broken?
He never knew their name, they refused to say. They knew to never call him Paa, that wasn't who he was to them. So it was simply "Lamb" and "Baa". It stuck for each of their forevers.