Mika is a very lucky man, because if I'm not wrong, its an invitation from the eccentric Damien Hirst, a modern British artist who's works have gone up to 4 million pounds in auctions
He did a whole series of pieces which were based on medicines and hospitals, so that is probably the reason of the invitation.
I saw his exhibition at the Tate Modern in London 2 years ago and it was simply astonishingly weird (in a good way!).