Si on avait besoin d'une cinquième saison, better known as Les cinq saisons, is the second studio album by Canadian progressive rock band Harmonium. It was released on April 15, 1975, in Canada by Celebration Records, a subsidiary of Quality Records. It was the band's second and final release for the label, as its contract ended in October 1975. Les cinq saisons was released in France via Gamma Records. PolyGram, which absorbed the interests of Quality Records, later reissued the album on various formats in several countries.