Who sings why you looking at me?

Answer 1

I know Colin Hays sings "Are You Lookin' at Me?"

I don't know if "Why You Looking at Me?" is a song.

However, on the lighter side:

You have made a grave typing error. I assume you tried to type two separate questions: "Who sings?" and "Why are you looking at me?"

Answer to "Who sings?": anyone with emotions and working vocal cords.

Answer to "Why are you looking at me?" Well, you made a grave typing error. I'm staring you down to make you feel guilty.