La formazione del gruppo ha subìto innumerevoli modifiche nel corso dei 50 anni di attività. Quanto sotto si riferisce alla composizione riportata sui vari album. Si è cercato di evidenziare in grassetto i cambiamenti di formazione.
Periodo francese JAZZ SÉBASTIEN BACH (Philips, 1963) GOING BAROQUE (Philips, 1964) SOPRANI - Christiane Legrand - Jeanette Beaucomont CONTRALTI - Claudine Meunier - Anne Germain TENORI - Claude Germain - Ward Swingle BASSI - Jean-Claude Briodin - Jean Cussac
SWINGING MOZART (Philips, 1965) SOPRANI - Christiane Legrand - Jeanette Beaucomont CONTRALTI - Alice Herald - Anne Germain TENORI - Claude Germain - Ward Swingle BASSI - José Germain - Jean Cussac
LES ROMANTIQUES (Philips, 1965) SWINGLING TELEMANN (Philips, 1966) PLACE VENDÔME (con il Modern Jazz Quartet) (Philips, 1966) SOPRANI - Christiane Legrand - Jeanette Beaucomont CONTRALTI - Alice Herald - Claudine Menier (già presente nei primi album) TENORI - Claude Germain - Ward Swingle BASSI - José Germain - Jean Cussac
NOËLS SANS PASSEPORT (Philips, 1968) – (conosciuto anche come Christmastime) SOPRANI - Christiane Legrand - Jeanette Beaucomont CONTRALTI - Helène Devos - Claudine Menier TENORI - Joseph Noves - Ward Swingle BASSI - José Germain - Jean Cussac
AMERICAN LOOK (Philips, 1969) THE JOY OF SINGING (Philips, 1972)– (conosciuto anche come Les 4 Saisons / Le Printemps) SOPRANI - Christiane Legrand - Nicole Darde CONTRALTI - Helène Devos - Claudine Menier TENORI - Joseph Noves - Ward Swingle BASSI - José Germain - Jean Cussac
Periodo inglese MADRIGALS (CBS/Columbia, 1974) WORDS AND MUSIC (CBS, 1974) SOPRANI - Mary Beverley - Olive Simpson CONTRALTI - Carol Hall - Linda Hirst TENORI - John Potter - Ward Swingle BASSI - John Lubbock - David Beavan
A-RONNE / CRIES OF LONDON (Decca, 1976) SOPRANI - Catherine Bott - Olive Simpson CONTRALTI - Carol Hall - Linda Hirst TENORI - John Potter - Ward Swingle BASSI - John Lubbock - David Beavan
SWINGLE SKYLINER (EMI, 1979) SOPRANI - Nicole Tibbels - Olive Simpson CONTRALTI - Sharon Halliday - Lindsay John TENORI - Alan Byers - Ward Swingle BASSI - Lindsay Benson - David Beavan
"LIVE" IN NEW YORK 82 (Swing, pubblicato nel 2006 anche se è un live del 1982) SOPRANI - Kym Amps - Olive Simpson CONTRALTI - Susan Bickley - Carol Canning TENORI - Philip Sheffield - Ward Swingle BASSI - Michael Dore - Simon Grant
REFLECTIONS (Swing, 1985) SOPRANI - Jacqueline Barron - Olive Simpson CONTRALTI - Jean Carter - Carol Canning TENORI - Andrew Bushter - Jonathan Rathbone BASSI - Michael (Mike) Dore - Simon Grant
LIVE AT RONNIE SCOTT'S (Swing, 1987) SOPRANI - Helen Massey - Deryn Edwards CONTRALTI - Jean Carter - Carol Canning TENORI - Andrew Bushter - Jonathan Rathbone BASSI - Michael (Mike) Dore - David Porter Thomas
1812 (Swing, 1989) THE BACH ALBUM (Swing, 1991) A CAPPELLA AMADEUS, A MOZART CELEBRATION (Virgin Classic, 1991) AROUND THE WORLD, FOLK SONGS (Virgin Classic, 1991) SOPRANI - Helen Massey - Deryn Edwards CONTRALTI - Linda Stevens - Heather Cairncross TENORI - Andrew Bushter - Jonathan Rathbone BASSI - Ben Parry - David Porter Thomas
THE STORY OF CHRISTMAS (Swing, 1994) PRETTY RING TIME (Swing, 1994) SOPRANI - Sarah Eyden - Michaela Haslam CONTRALTI - Kimberley Akester - Heather Cairncross TENORI - David Morris - Jonathan Rathbone BASSI - Mark Williams - Nicholas (Nick) Garret
NEW WORLD (Swing, 1995) SOPRANI - Sarah Eyden - Michaela Haslam CONTRALTI - Rachel Weston - Heather Cairncross TENORI - David Morris - Jonathan Rathbone BASSI - Mark Williams - Nicholas (Nick) Garret
LIVE! (Swing, 1997) SCREEN TESTED (Swing, 1998) SOPRANI - Sarah Eyden - Deryn Edwards (già presente in "Live at Ronnie Scott's") CONTRALTI - Rachel Weston - Heather Cairncross TENORI - Gavin Cuthberson - Robert Kearley BASSI - Mark Williams - David Porter Thomas (già presente 1987/1991)
TICKET TO RIDE - A BEATLES TRIBUTE (Swing, 1999) SOPRANI - Ann De Renais - Joanna Forbes CONTRALTI - Sarah Simmonds - Wendy Nieper TENORI - Andrew Gray - Michael Robinson BASSI - Jeremy Sadler - Patrick Ardagh-Walter
KEYBOARD CLASSICS (Swing, 2000) LIVE IN JAPAN (Swing, 2001) SOPRANI - Ann De Renais - Joanna Forbes CONTRALTI - Sarah Simmonds - Wendy Nieper TENORI - Andrew Gray - Richard Eteson BASSI - Jeremy Sadler - Patrick Ardagh-Walter
MOOD SWINGS (Swing / Primarily A Cappella, 2002) SOPRANI - Meinir Thomas - Joanna Forbes CONTRALTI - Sarah Simmonds - Wendy Nieper TENORI - Tom Bullard - Richard Eteson BASSI - Jeremy Sadler - Tobias Hug
RETROSPECTIVE: THE 40TH ANNIVERSARY SHOW (Swing / Primarily A Cappella, 2003) SOPRANI - Meinir Thomas - Joanna Forbes CONTRALTI - Johanna Marshall - Wendy Nieper TENORI - Tom Bullard - Richard Eteson BASSI - Jeremy Sadler - Tobias Hug
UNWRAPPED (Swing, 2004) - (conosciuto anche come Just Voices: A Cappella Christmas) SOPRANI - Meinir Thomas - Joanna Forbes CONTRALTI - Johanna Marshall - Kineret Erez TENORI - Tom Bullard - Richard Eteson BASSI - Jeremy Sadler - Tobias Hug
DIDO'S LAMENT (Swing, 2005) – EP BEAUTY AND THE BEATBOX (Signum, 2007) SOPRANI - Joanna Goldsmith - Julie Kench CONTRALTI - Johanna Marshall - Kineret Erez TENORI - Tom Bullard - Richard Eteson BASSI - Jeremy Sadler - Tobias Hug
FERRIS WHEELS (Swing, 2009) SOPRANI - Joanna Goldsmith - Julie Kench CONTRALTI - Johanna Marshall - Clare Wheeler TENORI - Tom Bullard - Richard Eteson BASSI - Kevin Fox - Tobias Hug
YULE SONGS (Swing, 2011) – EP SOPRANI - Joanna Goldsmith - Sara Brimer CONTRALTI - Clare Wheeler TENORI - Oliver Griffiths - Cristopher Jay BASSI - Kevin Fox - Tobias Hug
WEATHER TO FLY (2013) SOPRANI - Joanna Goldsmith(-Eteson) - Sara Brimer CONTRALTI - Clare Wheeler TENORI - Oliver (Ollie) Griffiths - Cristopher Jay BASSI - Kevin Fox - Edward Randell
Swingle