Translation:Oh no, the opera house is over there and father is singing again.
ask my kids ;) we do not live near a opera house, but near a chapel some famous writer wrote a poem about... the kids hate it, every time we pass by that chapel mom needs to recite that poem :D I might be wrong, but with this sentence I imaging some Dad bellowing opera songs out, with the kids being totaly embarrsed.
No, they are not interchangeable. I am not sure how to describe it though. Maybe uudestaan would be used if some specific action is repeated in its entirety, from start to finish. Taas could also be used if the number of repeats is large or undefined and it is expected to happen again.