Music and chat with Roy and guests.
Cardiff astrophysicist Prof Chandra Wickramasinghe discusses the latest images of Pluto.
Music and chat with Roy and guests, plus Choir of the Week All That Malarky.
Roy hears from Professor Iestyn Jones about his career change from actor to archaeologist.
Roy looks ahead to the Welsh Proms with conductor Owain Arwel Hughes.
Roy's guests include John Pikoulis, who discusses the life of World War II poet Alun Lewis
Roy visits the Royal Mint and discovers the link between it and the Battle of Waterloo.
Roy looks ahead to Cardiff Singer of the World with former accompanist Ingrid Surgenor.
Roy's Choir of the Week is the Ebbw Fach from Abertillery.
Roy is joined by Rhondda playwright Frank Vickery and singing coach Angela Durrant.
Roy's special guest is character actor Bernard Cribbins.
Roy hears from the Australian Welsh Male Choir that is heading to Wales.
Roy marks Bing Crosby's birthday by playing some of the Crooner's best-loved songs.
Roy's guests include former royal harpist Claire Jones. Includes Stories from the Stacks.
Roy finds out about the Hand On Music Project in Wales.
Roy chats to Welsh adventurer Lowri Morgan about her latest extraordinary achievements.
Music and chat with Roy and guests. Roy's guest is sports broadcaster John Inverdale.
Music and chat including Stories from the Stacks and Roy's Golden Postbag.
Roy looks ahead to the Cardiff Ukulele Festival at St David's Hall in Cardiff.
Roy is joined by Merthyr-based choir Con Voce. Includes Stories from the Stacks.
Music, chat, & 'Stories from the Stacks', exploring the treasures of the National Library
Roy is joined by Hinterland's Mali Harries. Plus Stories from the Stacks.
Roy hears about a thriller novel based on the legend of Prince Madoc.
Roy meets John Richards and Jack Morgan, grandson of the famed rugby player Cliff Morgan.
Roy previews the Hiraeth Concert taking place at St David's Hall in Cardiff.
Welsh Rugby Union's music director and conductor Haydn James joins Roy.
Roy Noble finds out about historic sites linked with the legend of Santes Dwynwen.
Roy celebrates the 175th anniversary of the birth of Ivor Novello.
Roy learns about the history of Kidwelly in Carmarthenshire.