Crossword puzzle clue "you might have seen it before now"

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

You might have seen it before now

Sounds you might make when I say "Would you rather watch your parents have sex or have your parents watch you have sex?"

Feeling that you've seen something before seen something before

What you might have seen if you had been at director Stone's prom?

Before now, before now

Stare at a rose for six hours because you've never truly seen a flower before until now

Spiro who wrote, "If you've seen one city slum, you've seen them all"