An interesting angle on a fabulous subject, this press release looks very promising:

THE JUBILEE SINGERS BY ADRIAN MITCHELL adapted for radio by Celia Mitchell
BROADCAST ON BBC RADIO 4 : SATURDAY 15TH MAY 2010 AT 14.30
The play stars London black gospel choir NITROVOX, with musical direction by Felix Cross and Allyson Devenish and a stellar black cast ; Adjoa Andoh, Felix Dexter, Nadine Marshall Tanya Moodie,Alibe Parsons Clive Rowe and Ray Shell are joined   by Jonathan Pryce , for whom Mitchell wrote the play.
THE STORY
The premiere of playwright and poet Adrian Mitchell's drama about   the   extraordinary Jubilee Singers from Fisk University Nashville, who in the years immediately after the abolition of slavery brought their great sorrow songs   to Europe.
The late Adrian Mitchell, who died suddenly last year, was a much loved and revered poet, playwright and human rights campaigner. He was inspired to write this play with music by the true story of the Welsh journalist who toured with the black American Jubilee singers from their University, founded to provide education and a future for black students, in their first European tour in the late nineteenth century, when they brought their Sorrow Songs and Spirituals to the rest of the world for the first time since the abolition of Slavery. The singers enchanted Queen Victoria, and the now iconic song Swing Low Sweet Chariot was heard in England for the first time when they sang it to packed concert halls throughout the country. Mitchell's play was conceived for the theatre but it has not yet had a stage production; this is its premiere; adapted for radio under the guidance of Adrian's widow Celia . The play stars London black gospel choir NITROVOX, with Musical directors Felix Cross and Allyson Devenish and a stellar black cast ; Adjoa Andoh, Felix Dexter, Nadine Marshall Tanya Moodie,Alibe Parsons Clive Rowe and Ray Shell are joined   by Jonathan Pryce who plays the Welsh journalist who is captivated by a completely new kind of song, and hears each singer's own story and begins to be entranced by them, though he experiences the inevitable barriers which nineteenth century culture placed between men and women of different race. The director is Marilyn Imrie for Pacificus Productions