With the 20th anniversary of CMT’s “Crossroads,” the network has a treat for fans. “CMT Crossroads: Robert Plant & Alison Krauss” premieres on Tuesday, November 29th at 8 p.m. Central Time. The duo first appeared on the show in 2008 following the release of their six-time Grammy winning album “Raising Sand,” and they’re back during their world tour supporting their latest album, “Raise The Roof.” If you miss the first broadcast, CMT has scheduled encores for 9:30 p.m. the same night, and then at 10 a.m. on Sunday, December 4th.