Warren Haynes made a surprise appearance at the Dan Toler ALS Support Benefit Festival this past weekend. As previously reported, the two-day benefit for former Allman Brothers Band guitarist “Dangerous” Dan Toler took place at Herschberger Ranch in Sarasota, FL on November 12 and 13. Toler was recently diagnosed with with amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig’s disease. His brother Frankie Toler, another Allman Brothers Band alum, died earlier this year.

The benefit boasted appearances from Dickey Betts & Great Southern, Bo Bice, Bonnie Bramlett, The Sean Chambers Band, BlackHawk, The Artimus Pyle Band, Greg Poulos/Anderson, Michael Kach Group, Frankie Lombardi and Come Back Alive featuring Tony Tyler, among others. Haynes—who replaced Toler in the Allman Brothers Band—also hopped off tour with his own band to sit in with Artimus Pyle Band on three songs, including “Simple Man” and “Freebird.” Haynes and Pyle recently performed the song at the Another One For Woody Benefit last November. Haynes also sat in for one song with The Outlaws, who included original founding member Henry Paul. Guitarist Sean Chambers, who played on Saturday, featured Dan Toler’s former bassist, Jeff Artabasy, during his set.

Toler—who performed in a wheelchair—also emerged to play with both Dickey Betts & Great Southern (including on the classic “Ramblin’ Man”) and Bonnie Bramlett. Toler toured with Great Southern in the ‘70s and rejoined the group after Betts parted ways with the Allman Brothers Band in 2000. Bramlett toured and recorded with The Allman Brothers Band during Toler’s tenure in the band from the late ‘70s-1982.