Answer:
I am owned by Old McDonald.
I begin with the letter āiā, if you add āaā in front of me, I become a new word with a different meaning, but still sounds exactly the same. What word am I?
I cannot be felt, seen or touched. Yet I can be found in everybody. My existence is always in debate, yet I have my own style of music. What am I?
Long and thin red within with a nail at the end.
A large oasis in the desert. Come with cash and leave with none.
What is always coming but never arrives?