Justin Bieber's Coachella experiment: Nostalgia, or a new hybrid format?

Back home, it raises questions for artists and organisers: can something like this work here? Can artists bring their own catalogue into performances and get the same response? Is this the start of a new concert format, somewhere between a live show and a stream?

Justin Bieber's Coachella experiment: Nostalgia, or a new hybrid format?
Back home, it raises questions for artists and organisers: can something like this work here? Can artists bring their own catalogue into performances and get the same response? Is this the start of a new concert format, somewhere between a live show and a stream?