Radio SessionsSeries 2Episode 5BBC Radio Ulster Duration: 30 minutesFirst broadcast: Sun 1st May 2011, 16:30 on BBC Radio UlsterLatest broadcast: Tue 3rd May 2011, 19:30 on BBC Radio FoyleColum Sands with more great live music and song from the BBC Radio Ulster folk and traditional music archive. This week it's Altan and Mary Black.GenresMusicFolkBrandRadio SessionsSeriesRadio Sessions: Series 2 Source: BBC Online