Crossword puzzle clue "dialogue on a low level"

According to Flo Rida, one who got low, low, low, low, low, low, low, low

Dialogue on a low level

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

Low-level conflict

Low level of baseball's Minor League