Wow! I didn't see that one coming.
I think the idea of some sort of
'musical show' makes a lot of sense actually. To me, it conjures up images of lots of dancing and possibly guest appearances. In fact it leaves the door wide open for just about anything you can put on a stage.
If I was being cynical (who me?) then I might also think that it's a good way to try to fill up seats with the sort of people who might not necessarily go to a concert, just to see Alizee sing, but who would go to a 'show' just before Christmas.