Deux cents nuits à l'heure is a one-off collaborative album by Québec singer-songwriters Serge Fiori and Richard Séguin, released in 1978. Fiori had taken a break from his progressive rock band, Harmonium, while Séguin's folk group, Les Séguins, had recently folded, leaving the two artists free to collaborate on this new project. When the project was first announced in early 1977, it was to be a trio including Michel Rivard of Beau Dommage, then was expanded to a quartet with the addition of Pierre Bertrand. When Rivard and Bertrand proved unavailable, Fiori and Séguin set out to do the album on their own.