CBS This Morning” co-host Gayle King got an exclusive look inside the studio where Lil Nas X recorded his wildly popular song “Old Town Road.” The 20-year-old rapper shot to stardom earlier this year when his song earned — and then famously lost — a spot on the Billboard country chart. “Old Town Road” ultimately went on to break Mariah Carey’s record for the longest-running Billboard Hot 100 No. 1 single of all time.

Lil Nas X took King to the humble Atlanta studio, called CinCoYo, where the young musician paid just $20 for a recording session — a promotional rate the studio offers called “$20 Tuesdays.” Lil Nas X, whose real name is Montero Lamar Hill, told King he recorded the song in under an hour and for a total of $50, the cost to lease the beat he used plus the $20 studio rate.

In a wide-ranging interview, Lil Nas X returned to his high school and opened up about the difficulties of coming out, his plans for the future and the whirlwind that has been this past year.

Watch Gayle King and Lil Nas X sing “Old Town Road” together in the above player and tune in to “CBS This Morning” on Tuesday, October 1, for the full interview.

Lil Nas X opens up about the difficulties of coming out: “We still have a long way to go”

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