Story highlights In the ad, a rap by the artist Aspiring Mogul is overlaid with clips of Carson speaking

Asked about the ads, Carson said he personally would have approached them differently

Washington (CNN) Ben Carson's campaign is rolling out a new ad in markets with large African-American populations that features a rap promoting the candidate for president.

The radio ad, called "Freedom," will run in Miami, Atlanta, Birmingham, Jackson, Memphis, Little Rock, Houston and Detroit, according to Carson campaign spokesman Doug Watts.

Carson is currently neck-and-neck with Donald Trump for the top spot in GOP presidential polls.

JUST WATCHED Ben Carson's new radio ad Replay More Videos ... MUST WATCH Ben Carson's new radio ad 00:58

In the ad, a rap by the artist Aspiring Mogul is overlaid with clips of Carson speaking, as the music urges listeners to "vote, vote."

"I'm very hopeful that I'm not the only one who's willing to pick up the baton of freedom, because freedom is not free and we must fight for it every day," Carson says in the ad. "Every one of us must fight for it because we're fighting for our children and the next generation."

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