“Today” show hosts Matt Lauer and Savannah Guthrie say they’ll welcome some special local guests during their live broadcast from Faneuil Hall on Friday morning. We now know that one of those guests will be Ken Casey. Casey and his pals in the iconic Boston-based Celtic rock band Dropkick Murphys will play their song “Rose Tattoo” sometime during the 8 a.m. hour of the show.

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