I was interested in making this as well, there is just something about it I really like.
I would start from a life cast and sculpt it in clay. then vacuform it from clear or tinted plastic, except for the grille in the front, I would source a perforated metal for that or the tedious task of drilling/punching holes in Styrene and then paint.
As an aside, I think it may only exist in CG, there are a couple of weird angles in the moving mask, making me think none of the shots are of a practical mask. also I think the earlier shots of the DJ are not Dr Dre.