Just one, provided there is a programmer around to explain how to do it.
or
2 years old.
Cow: "Mooooove over"
Sheep: "Naaaaaaa."
or
Because 7 ate 9.
or
He took them to a pignic.
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To give us some sort of appreciation for flutes.
Did you hear about that music composer who committed suicide? He didn't even leave a note.
or