One square away from finishing this morning's puzzle, I wrote Anita to enquire about "Piano piece", 5 letters, ET_DE. (It's true, sometimes I will get all the letters but one and still be stuck. I'm not ashamed to admit it. Okay...I'm a little bit ashamed to admit it). After asking her, I gave her some more context, "The cross-word is..." ...and then it hit me! Cross-word. Cross word!!! Crossword! Genius.
ps. A five letter word for "Piano Piece" is ETUDE. Thanks, Anita. .