John Driskell Hopkins talks about living with ALS and finding 'solutions' for disease through his nonprofit
John Driskell Hopkins is perfectly in tune. The 51-year-old multi-instrumental musician, who goes by the name "Hop," has played in front of millions of fans across the world as a founding member of the Grammy award-winning group Zac Brown Band. He’s a songwriter, and co-wrote the band’s first No. 1 hit on the Billboard Chart, "Heavy Is the Head," featuring vocals from the late Soundgarden singer Chris Cornell.The song made Zac Brown Band only the second musical act after Bon Jovi to have a No.