Former Allman Brothers guitarist Warren Haynes weighed in on the passing of Butch Trucks, saying that he is “still in shock.”

In a Facebook post, Haynes said, “I am truly honored to have played music and shared life with Butch for over 25 years. He was one of a kind-as a drummer and as a human being.”

The guitarist said that Butch is “part of what is unfortunately now a dying breed of musicians who served with honor like soldiers. He put 110% of his self into every song he played. He was the Lou Gehrig of rock drummers.”

Haynes noted that Trucks was “very proud” of the fact that he was the only member of the band to never miss a show, right up until the group’s disbandment in 2014.(Truck’s only missed performance was a single show at the Beacon Theatre during the ABB’s final year.)“His mission in life was to serve the music. And serve the music he did.”