"Name That Theme" defeated me today, in a pleasing way. Maybe I should have been able to figure it out — HERD, BUTT, KNOT, and SCENE are all common in homophone themes. Bravo to Ed for keeping me guessing until the very end.

I should say, guessing until the very end … and beyond. I eventually figured out that a VOICE / ACTOR is "heard but not seen." The phrase felt familiar but not right, though, so I focused on that nit for a while. (It's usually "children should be seen and not heard.") That distracted me enough that I glossed over the ultra-long clue, pointing to the real a-ha in the puzzle.
Read it again, I'll wait.
Again.
AGAIN!
"… like the words sounded out at the starts of the answers to the four starred clues."
That's a mouthful. Maybe shading those four words would have been better, so the clue could have read:
"like the shaded words, sounded out."
It's a great concept, that the four sounded-out words themselves — heard but not seen — are exactly that. The clue doesn't do it justice, though. Usually, I'm all for obfuscating a theme until the very end, but I doubt shading would have taken away from the impact since the concept is already complicated.
Curious placement of the VOICE / ACTOR revealer. It'd have been more elegant to drop those into the bottom row, but it's not easy to work STEALER and ACTOR into the same corner. I bet the SE corner wouldn't have been as smooth with ACTOR in the bottom row, so I'm okay with the decision.
I would have liked a smidge more smoothness, though. ELAND and STOAT are toughies for newbs, and coming from the same category — I'll take Crossword Animals for $400, Alex. Adding in SIBYL, ALB, BRAGG into one small region makes it even harder. Every one of these entries is fine in general, but it's too much as a whole.
So many Tuesdays tend to be forgettable, so I appreciate the extra layers Ed put into this concept. Made me think.