Fred Small has a great talking blues about a person in a wheelchair. I don't recall the name.I'm gratified that my song "Walking On My Wheels" is in the DT. I don't know how to do MIDI files, but for those who would like the tune, I believe it was in Sing Out! several years ago. It's also been recorded by Bob Reid and Dan Crow.
There's a fine a capella song called Nine Gold Medals about a special olympics race. It was written by a NYC songwriter whose name escapes me. I'll try to find the name and the words and post them here. (Should try a DT search first, of course!)
I'm a pediatrician with a special interest in children with developmental and physical disabilities, and I really appreciate this thread.