This week's music is an unusual compilation. John McCormack, the legendary Irish tenor, sings 'Thanks be to God' in a recording from 1923; the American bass-baritone, Paul Robeson, sings 'All through the night', recorded in 1937; another famous Irish tenor, sings 'It is no secret what God can do', recorded in the early 1950s; and Máire Brennan sings 'Be Thou my vision' in the original Irish, recorded in 1998.
