Answer: so um mabye in his grouth deveolpmint he has a problem with his vocal cords, he has a tumer in his vocal cords, or he had problem in the cerbral and cerrebellum parts of the brain that has parts that make music and move the mussels to move! the vocal cords also need mucels to move, so it could be the cerebellum
Explanation:
i dont know if this helps because you didnt really give a question! but i hope it helps!
<em>knee is a joint...
knee caps are made up of cartilage ,, so it is connective tissue...
</em>
