[2] After he had sung in Canada in 1969, Léo Ferré, who was interested in rock music, briefly went to New York City to find the right sound for his "new language", used in his insurrectionary poem Le Chien.

Initially, a studio session was intended with Jimi Hendrix, who cancelled, being ill. Ferré recorded with John McLaughlin and Billy Cobham, guitarist and drummer of Mahavishnu Orchestra, and Miroslav Vitous, bassist of Weather Report.

For some reason, Ferré didn't use this version and re-recorded the track with Zoo, a young French band recently signed to his record label Barclay, going more de-structured (with a more irregular beat).

(the self-same track, Les Passantes, Psaume 151, Le Crachat), that critics would praise as a truly renewal of his inspiration, without noticing these texts had been mostly written in the early 50s.

It was dismissed from the original LP by his record label and was released on 45s one year later (it is included in the album since CD editions).