Tenebrae Consort, John Lill, Hilary Davan Wetton
Sean Rafferty's guests include one of the most widely acclaimed and well-loved British pianists, John Lill. He'll be playing live in the studio as he celebrates his 70th birthday this month.
Vocalists Tenebrae Consort (the more compact version of the choir Tenebrae) will perform plainsong, and music by John Sheppard.
Plus conductor Hilary Davan Wetton drops in to the studio to talk to Sean about his upcoming 70th birthday concert with the Royal Philharmonic Orchestra - he'll be conducting Elgar's The Dream of Gerontius.
Main headlines are at 5pm and 6pm.