Founding member Mimi Perrin arranged most of the the songs (the remainder were Quincy Jones' arrangements of his tunes for the Count Basie Orchestra) and translated them into French. Her arrangment technique was to assign each voice an instrument to emulate, and the effect is pretty darn stunning -- vocalese in en Francais is a lot speedier than its English-language counterpart.
Future members of the Swingle Singers (later famous for their bebop take on Bach), Ward Swingle and Christiane Legrand (she of the insanely high voice that you'll hear here), were part of Les Double Six as well.
Les Double Six -- Meet Benny Bailey (Au bout du fil)
Les Double Six -- Boplicity (La légende du troubadour)
Les Double Six -- Rat Race (La course au rat)
(Bonus: Mimi Perrin interviewed on NPR's Weekend Edition.)
(buy Les Double Six from Amazon.)
Also for your listening pleasure, WFMU has 61 versions of "Tico Tico" online. I can't tell you why I find this so wonderful, I just do. I especially love the Andrews Sisters' version.
BTW, the Nellie McKay tracks from the soundrack to Rumour Has It mentioned the other day can be found at Ze Paramour.
In other news, I'm in the process of deciding the bands that comprise "ones to watch in 06," and I believe that's what's coming next 'round these parts.