Here's a bizarre anecdote: apparently Jenny Lewis was approached by Kanye West and... well, let's let her tell her story:
My mate Lincoln was once asked what he thought of the new style Coke cans, back when the shift from detachable ringpulls was being made - they paid him for his time by letting him finish the can of Coke for free; and I once spent some time on the top floor of Hepworth chambers sampling sandwich pickles, but I've never heard of an artist carrying out their own market research before.
I say "carrying out their own market research"; unlike Jenny, I suspect the question was not 'how does this track resonate with a non-core audience' so much as 'will confirming that, yes, I am Kanye West persuade this attractive young lady to fling herself at me'.
If I was a pop star, though, I think I'd adopt this approach for a laugh - imagine if, say, Paul Heaton came up to you on Piccadilly station and got you to listen to a track which had, halfway through, someone whispering 'everyone on the station thinks you are Paul Heaton's boyfriend'.
[Again, thanks to Michael M]