Cellar door

Yesterday's language column in the NYT mentions "cellar door" as an expression of special beauty. Tolkien loves it. H.L. Mencken loves it, finds it "intrinsically musical". Shakespeare scholar C.L. Hooper includes it in the list of words he loves most, next to "dubloon", "squadron", "Sphinx" and "Jungfrau". And so on and so forth.

Cellar door. Cellar door. Cellar door.

Cellar door. Cellar door. Cellar door.

I don't get it.

I like "dubloon", though.