Well, I run an Internet radio programme, uploads for which are announced every month on Mudcat Cafe. It's multi-racial, multi-cultural and multi-lingual, and it tries to feature every form of traditional music and song on the planet. So it's by no means a haven a haven for acapella singing. Even so, here'sa list of everyone I can think of who has appeared on the programme singing acapella in English in the two and a bit years since I started running the station.

http://www.live365.com/stations/oneworldmusic


22, Little Red, Tangle Eye & Hard Hair
Alabama Sacred Harp Singers
Almeda Riddle
Amy Birch
Angelo Dornan
Annie MacKenzie
Arthur Howard
Aunt Fanny Rumble
Belle Stewart
Bert Lloyd
Bessie Jones
Bob Brader
Bob Davenport
Bob Forrester
Bob Hart
Bob & Ron Copper
Bodmin Wassailers
Bridget Tunney
Bright Light Quartet
Carmel Gunning
Carollers from the Royal Hotel, Dungworth
Cathie Stewart
CB and Gang
Charles Jones_Cordell Reagen_The SNCC Singers
Charlie Murray
Charlotte Renals
Children at Dingwall Primary
Children at San Juan's Government School, Trinidad
Children at St Mary's Junior Schoo, Leyland, Lancashire
Clear Rock et al
Coal Aston Carollers
Congregation of the Laurel Glenn Regular Baptist Church
Copper Family
Cyril Phillips
Cyril Poacher
C.J. Evans Gospel Choir
Daisy Chapman
Dillard Chandler
Doug Wallin
Duncan Williamson
Dungworth Carollers
Eddie Butcher
Edna Ritchie
Elizabeth Cronin
Ernest Williams & Group
Eunice Yeatts MacAlexander
Evening Breezes Sextet, The
Ewan MacColl
Foolow Carollers
Frank Hinchliffe
Frank Mills
Frankie Armstrong
Fred Jordan
Freda Palmer
Freedom Singers
Geordie Hanna
George Dunn
Golden Gate Quartet
Grace Clergy
Harry Cox
Harry & Walter Sealy
Haxey Boggans
Heather Heywood
Heavenly Gospel Singers,
Hedy West
Hobart Smith
Horton Barker
Howard Adams and Congregation, Mayking, Thornton Old Regular Baptist Church, Kentucky
Ingbirchworth Carollers
Jack Elliott
Jane Turriff
Jean Ritchie
Jeannie Robertson
Jimmy McBeath
Jimpson
Jock Duncan
Joe Heaney
John Copper & Jon Dudley
John Maguire
John Maguire "Big John"
John Partridge
Joseph Taylor
Jumbo Brightwell
Keane Sisters
Kelly Pace, Aaron Brown, Joe Green, Paul Hayes, Matthew Johnson
Kelly Pace/Charlie Porter/L T Edwards/Willie Hubbard/Luther Williams/Napoleon Cooper/Albert Pate/Willie Lee Jones
Ken Hall
Kevin Mitchell
Kings of Harmony; Walter Latimore, Baritone ?/Carey Bradley, Lead/Marion Thompson, tnr/Eugene Strong, Lead/Bill Morgan bass
Len Graham
Lizzie Higgins
Lloyd Chandler
Louis Killen
Mabel Hillary
Mary Anne Carolan
May Bradley
Mitchell's Christian Singers
Nan Tom Taimin a Burcha
Nimrod and Phyllis Workman
Norman Kennedy
OLD SOUTHERN SACRED SINGERS
O.J. Abbott
Packie McKeaney
Paddy Tunney
Peta Webb/Ken Hall
Phil Tanner
Rosie Stewart
Roy Harris
Sam Larner
Sarah Anne O'Neill
Sarah Grey
Sarah Makem
Sheila Stewart
Sophie Legg
Stanley Robertson
Strange Creek Singers
Texas Gladden
The Birmingham Movement Choir
The Cantwell Family
Tom Lenihan
Truro Wassail Bowl Singers
Vera Hall Ward/Dock Reed
Walter Pardon
Willie Scott
Wiregrass Sacred Harp Singers