This week: our first Spring Break rebroadcast, originally from March 2011 at the Carnegie Hall of the South, the Ryman Auditorium in Nashville, Tennessee. Our friend Emmylou Harris sings the classic "Old Five and Dimers" and appears in The Lives of the Cowboys along with Sara Watkins, who also turns in "The Price" and joins Garrison for a few duets. Plus: harmonious duo The Civil Wars sing "From This Valley," Music City all-stars Sam Bush and Stuart Duncan team up for "Diamond Joe"; and an update on the arrival of spring in Lake Wobegon