About 10,000 Hours

"10,000 Hours" is a song recorded by American country music duo Dan + Shay and Canadian singer Justin Bieber. It was released as a single from Dan + Shay's forthcoming fourth studio album on October 4, 2019. It was released four days after Justin and Hailey Baldwin wed in South Carolina on September 30. It was written by Dan Smyers, Shay Mooney, Jessie Jo Dillon, Sam Boyd, Jordan Reynolds, and Bieber, and produced solely by Smyers. The song debuted at number four on the US Billboard Hot 100. It also made history on Billboard's Streaming Songs chart by becoming the highest-charting non-holiday country song in the history of the chart, besting the number nine peak of Florida Georgia Line's "Cruise".

The track has been described by Billboard as "mid-tempo". On September 29, Dan + Shay began teasing on social media that a track was arriving on October 4. They, as well as Justin Bieber, revealed the collaboration on October 2. "10,000 Hours" debuted at number four on the US Billboard Hot 100. In its first full week of tracking, it received 33.3 million streams, and became the highest-charting non-holiday country song in the history of the streaming chart at number three. It also sold 53,000 downloads in first week, and it was the number one song on the Hot Country Songs chart. It sold a further 17,000 copies in the second week. It was certified Gold by the RIAA on December 10, 2019. It has sold 194,000 copies in the United States as of January 2020. On November 27, 2019, a piano version arrived of the track that was called as the wedding version. Dan + Shay and Justin Bieber switched parts in the song as well, but the lyrics are the same.