Here's some circus stuff. It's not in any midi form that I'm aware of but it's out there available on 78 rpm records which is how I found it. There was a series of record sets that Capital records put out in the late 1940's that were based on the adventures of Bozo the clown. One set is called Bozo at the circus which has some wonderful circus melodies. I'm not sure where to send you to obtain copies of this but I know there are those with huge collections out there that do taping of old records. Or perhaps there may be reissues out there of this. I hope this helps. Reggie