Creators Riccardo Cocciante and Luc Plamondon would retain many rights individually, and EMI Blackwood appears to administer the songs, at least in part, but it's unclear who you would need to contact in order to perform the entire show.
Nobody owns the copyright of a single word. Perhaps you mean trademark.
the coca cola company owns the copyright
A minor owns the copyright on any works they create.
Universal.
Word Music.
Paramount.
Rankin/Bass.
Rondor Music.
There are 24 different copyright-protected items by that name.
The phrase "copyright obtained" doesn't give any indication of who copyright might be assigned to.
You can't. It is a right that the writer owns. You can offer to buy the copyright.
Unless other arrangements are made, the creator of a work controls the copyright.