[Musiclab]

Brian Mcknight is a great musician but I dont think you can be serious in mentioning Beyonce in the same category. Crazy In Love has terrible rubs with the chords of that track with the background vocals. In the lead vocal there is a spot where she sings a major third against a minor chord.
If your using loops and samples you have to sing with the chords that the loops are playing, not just stack thirds without paying attention . Somehow I dont think Brian Mcknight would ever let something like that on a track of his.
I dont mean any disrespect to you Dave, but whoever produced that track
I think dropped the ball.