NPR interviews the rap artist who provided the rap for that Ben Carson ad that has come up for a certain amount of mockery.

NPR provides the text of the answers, but the questions are summarized. I recommend listening to the audio to get a sense of whether there's condescension toward the black Christian Republican (whose name is Robert Donaldson (stage name: Aspiring Mogul)). This was the best part, where he responds to the question whether it's condescending to use rap music to appeal to "a certain constituency":

When Obama ran for president and the whole music industry made a song — from Will.I.Am to Alicia Keys to Common Sense and everybody — "Yes, I can! Yes, I can!" That was definitely a rap song. And so for me, I see it as the exact same thing. So [Ben Carson] did a rap ad — he did a country ad, too! Is that a knockoff to people who like country music, because he has a country song that represents him? ...

What I'm basically saying is: What genre of music is sufficient to use for a presidential ad? Is it only classical music? Is it pop music? I never said that this is an ad to get the black vote. That was the way they marketed it; I wrote the song because Ben Carson inspired me. And if they're using it for that reason, I'm now talking to you and have this opportunity to have this conversation. So the song has done, to some degree, the goal that I initially intended to begin with.