We have a new one at work. One of the Maths Dept suggested it's really a new element. I say one of those new ones they added on at the end with a very big atomic number. You could probably use it to produce electricity n suff.
It's very high up, so interesting for my Haydn mini orchestra. Had to put people quite far back otherwise they have to look straight up in the air.
We got it to prevent that nasty moment when the conductor steps backwards off the stage and gets quite a nasty injury. Never seen it happen, but have seriously considered the possibility.