Mennen joins a group of pioneers in voice training, including Frankie Armstrong, Cicely Berry, Arthur Lessac, Kristin Linklater, and Patsy Rodenburg.
Dutch trombonist Annemarie Roelofs, English singer Frankie Armstrong, Dutch woodwind player Angèle Veltmeijer, and French saxophonist and guitarist Françoise Dupety also played intermittently with the group.
Involved with folk and political songs from the 1950s, she has performed and/or recorded with Blowzabella, The Orckestra (with Henry Cow and the Mike Westbrook Brass Band), Ken Hyder's Talisker, John Kirkpatrick, Brian Pearson, Leon Rosselson, Dave Van Ronk and Maddy Prior.
Louis Armstrong | Lance Armstrong | Neil Armstrong | George Armstrong Custer | Armstrong Whitworth | Frankie Howerd | Frankie Laine | Armstrong | Frankie Boyle | Armstrong College | Frankie Goes to Hollywood | Frankie Knuckles | Frankie J | Gillian Armstrong | Frankie Valli | John Armstrong | Frankie Sandford | Armstrong Whitworth Whitley | Karan Armstrong | Frankie Muniz | Frankie Edgar | Frankie Cutlass | Frankie and Johnny in the Clair de Lune | Billie Joe Armstrong | Vanessa Bell Armstrong | Tim Armstrong | Robert Armstrong | Heather Armstrong | Frankie Negrón | Frankie Frisch |