Ms. Lempel always makes a smooth Monday puzzle, and today is no exception. The theme takes the idea of KEYS and finds four different ways to interpret them, each time embedding the word in a longer phrase. I had no idea what was going on, and had to search for the revealer after filling in the grid.
I'd never heard of a FLORIDAROOM, which in my parlance would simply be called a sun room. We are in the midst of building a screened porch off the back of our house, so that, it seems, would fit the bill.
Even after getting the revealer, I had a moment of not seeing how it would apply in the case of ATLASROCKET. The key here is that little inset in a map which tells you what the symbols used in the map stand for.
My error today came when I put CuNY in at 52D: Big Apple school inits. (CCNY). City College, not City University, see. Well, it was easily enough fixed when I saw LOuKOFHAIR.
There is plenty of fun in the fill, from GREEKSALAD to CICADAS, TROIKAS to HOUNDS. I personally enjoy a lovely ADAGIO from time to time. The Barber Adagio for Strings is simply haunting. The second movement from Beethoven's Pathetique sonata is lovely.