J.J. Grey | Courtesy Jefferson Center

Singer/guitarist J.J. Grey, of J.J. Grey and Mofro, was originally billed as part of Jefferson Center’s Blues at the Crossroads II performance. But Grey has backed out “due to unforeseen circumstances,” according to Grey’s website and jeffcenter.org. Atlanta-based bluesman Tinsley Ellis will be taking his place at the sold-out show.

The concert, which will pay tribute to the music of Howlin’ Wolf and Muddy Waters, is still scheduled to feature both harmonica man James Cotton and guitarist Jody Williams, who played with Wolf and Waters back in the day. Fronting the show are Kim Wilson and the Fabulous Thunderbirds, with a later-period Waters sideman “Steady Rollin’” Bob Margolin, along as well.

Keep your eyes on the blog over the next little while for a podcast with Cotton.