While this number doesn't qualify as actual progressive rock, it certainly fits as "art music." That basically makes it "art rock," although there isn't a real rock aesthetic here. Instead, this is based more on classical music. Whatever you call it, though, this is a particularly effective piece.

This review is available in book (paperback and hardcover) in Music Street Journal: 2020  Volume 5. More information and purchase links can be found at: garyhillauthor.com/Music-Street-Journal-2020.