John Driskell Hopkins is an American musician best known for his role as a founding member, vocalist, multi-instrumentalist, and songwriter for the Grammy Award-winning group Zac Brown Band. Hopkins co-wrote, with Zac Brown, Wyatt Durette, and Shawn Mullins, the Zac Brown Band's third single, "Toes", from their 2008 major-label debut The Foundation. It was the second number-one single for the band.

The Foundation is the first major-label studio album by American country music band Zac Brown Band. It was released on November 18, 2008. Originally slated for release on the Home Grown label and Big Picture Records, the album is distributed by Atlantic Nashville in association with those two labels. The financing for the album was provided by Atlanta, GA entrepreneur Braden Copeland through his investment company Braden Copeland Ventures, LLC. On December 2, 2009, the album was nominated for the Grammy Award for Best Country Album. and also earned the band the Grammy Award for Best New Artist on January 31. The album also has been nominated for the 2010 Academy of Country Music Awards "Album of the Year" award. As of September 2015, the album has sold 3.4 million copies in the US. It is the only album to feature Joel Williams, who left the band prior to its release.