Emmylou Harris and Rodney Crowell
In a very special programme Bob is joined in the studio by Nashville legends Emmylou Harris and Rodney Crowell.
They'll be singing songs from - and talking about - their new album of duets "Old Yellow Moon".
Emmylou and Rodney have been close working companions - and friends! - since 1975 when Emmylou discovered the young singer, songwriter and guitarist and had him join her legendary Hot band.