Superficiality is a bane of this uncertain show, for which Creel wrote the book, lyrics and soft-pop music. Commissioned by the Met’s Live Arts Department, and performed at the museum in 2021, it has the dispiriting feel of an advertisement for the Met’s collections — and despite the dozens of artworks projected upstage, not a persuasive one. Try though Creel does to convince us that he eventually succumbed to the museum’s magic, little of “Walk on Through” seems heartfelt. A lot of it seems forced, as if he is trying to deliver what he thinks is expected in response to the art: profundity, epiphany.