Warren Haynes sat in with Grace Potter & The Nocturnals at Stamford, CT’s Palace Theater on Saturday night. The guitarist—who has collaborated with Potter numerous times over the years—emerged during Potter’s encore for The Rolling Stones’ “Wild Horses” and “Honky Tonk Woman” as well as Bad Company’s “Feel Like Making Love.” The private performance was a benefit for DFTC. Haynes has a home near Stamford in Westchester, NY.

Potter will play a flood relief benefit in Burlington, VT this Sunday. For more on Haynes, pre-order the December issue of Relix featuring our exclusive cover story.