The earliest broadcast that can be found in the BBC Archive is listed in Radio Times as being at 8.15pm on Thursday July 13th 1939.
“A programme from the LibraryThe Rev. Canon E. H. Fellowes , D.Mus., will take listeners on a tour of the Library, and tell them of the musical treasures in his care
Strings from the BBC Midland
Orchestra
Led by Ernest Element
The BBC Midland Singers
Chorus Master, Edgar Morgan
The Choir of St. Michael’s College
Organist, Maxwell Menzies
Conductor, W. K. Stanton
Illustrations will be taken from …?