As posted in the 'other' thread, Juventino Rosas' (1868-1894) Sobre las Olas (Over the Waves) is standard for the trapeze, slack rope & high wire (calliope, merry-go-round, Ferris wheel, ad nauseum.)

I think half of what I posted there would fit better here. I searched for a circus folklore thread but didn't find one.

Midi - http://www.mountaindulcimer-1-3-5.com/archive-over_the_waves.htm

YT: Central Military Band of the Russian Ministry of Defence - Sobre las Olas:
https://www.youtube.com/watch?v=BrFhfPYPUl4