The following appears to be a low-altitude flight demonstration of an R44 helicopter at a rodeo in Brazil, and was uploaded in 2012. One can say many things about the this flight demonstration, but those statements would likely include words or phrases like 'unsafe,' 'completely nuts,' and 'what the hell were they thinking?' By luck or by skill, no aircraft or humans were hurt in the making of this video.
The rough translation of the title of this video is 'Puerto Murtinho Centennial Rodeo with Helicopter Waltz.' Indeed the background music includes 'The Blue Danube' waltz from Johann Strauss, though it is hard to hear it behind the play-by-play from the MC standing on one the helicopter's skids.
Puerto Mortinho is a small city in southern Brazil. The full tail number is blocked off, but it begins with 'PT,' which is one of the tail number prefixes assigned to Brazil. If you are tempted to see this demonstration in person, our suggestion is not do so.