Crossword puzzle clue "now level"

1950s-'60s hit with the lyric "Ah, you made me love you / Now, now, now, now your man is come"

Low-level pollution or high-level protection

Warning sign at a train station's food court? (NOTE: The original sign, without my additions, actually exists. It's in Grand Central Terminal in NYC, on the lower level — the food court level. The sig

Class, level or class level

Management level or theater level

Now level

"Now seems it far, and now __": Scott

Now you see it, now you don't