Lil Nas X holds the record for the longest-running number one single on the Billboard Hot 100 with his hit 'Old Town Road.' The song, which blends country and rap elements, spent 19 weeks at number one in 2019. 'Old Town Road' gained popularity through TikTok and social media, which helped it become a viral sensation.

Lil Nas X's success with 'Old Town Road' disrupted genre boundaries and challenged traditional notions of what constitutes country or rap music. The song's success also opened doors for other artists who seek to blend genres and experiment with their sound. It remains a defining track of the late 2010s, signaling a shift in the music landscape.