flying singing pigs

There was a time,long ago,where the sky was full of singing flying pigs,they were trained and looked after.People enjoyed their singing.One day,money was needed for war and it was decided by the government to tax them , at first it was per song, then per fly ,finally and slowly the pigs stoped singing and flying,then they forgot they once did it,trainers become lawyers or accountants,some policemen or even worse, politicians......Pigs can fly.