I like this theme of "Water, water everywhere." Who doesn't love a Coleridge reference right in the middle of his crossword puzzle? And the water molecules... well, I don't know about you, but I liked those too. It's just a pity that one of Handel's "Water Music" suites isn't in EMAJ (19A: Key of Haydn's Symphony No. 12 or 29).
Perhaps I'm reading too much into things again, but I enjoyed the other watery references in this puzzle, like HOTBATH (7D: Relaxing conclusion to a long, hard day), ARUBA (One of the ABC Islands), and the unusual clue, 58A: Down a sub, e.g. for EAT.
In other news, I liked seeing TYCHOBRAHE (29D: Astronomer who coined the word "nova") (questionable) in the grid, as well as EXHORT (37A: Urge strongly), and PATHOS (49D: Pity). And I loved the clever, musical-ish clue for SEEME (53D: Note accompanying an F, maybe).
All in all, a pretty clean puzzle, and a fun one, right up to the ending of 73A: "This looks bad!" (OHGOD). IMHO (68A: Texter's disclaimer), that was hilarious.
p.s. Starting today (and when we remember), we're going to assign a cumulative score for each constructor with at least two puzzles in this blog. This is the second puzzle we've seen by Jeff Chen, and we are happy to report that he is now 2-0.