The mirror in which we should look is the "The Last Ship" musical by Sting.
Maybe the only difference might be that, as far as I know, Sting composed that musical by its initiative, and MK was asked (according Guy's answers) to do it.
Sting recorded all the songs with guests musicians and his own band, released it on cd and then actors played it at Broadway and in some places in England. It looks like MK recorded the songs with his musicians and guests, it might be released in CD and then, actors will play it on stage...
I think they are close projects, aren't they?