Vienna has 1 Yo Gabba Gabba! concert.

Yo Gabba Gabba! is a children's television series currently airing on the Nick Jr. and Noggin cable networks. Hosted by a human character named DJ Lance Rock, the series features a mix of live-action segments featuring cartoonish costumed characters--Muno (the red cyclops), Foofa (the pink flower bubble), Brobee (described only as "the little green one"), Toodee (the blue cat-dragon) and Plex (the yellow robot)--and many short animated sketches and musical numbers.