"Seasons in the Sun" is an English-language adaptation of the song "Le Moribond" by Belgian singer-songwriter Jacques Brel with lyrics by American singer-poet Rod McKuen. It became a worldwide hit in 1974 for Canadian singer Terry Jacks and became a Christmas Number 1 in 1999 for Westlife. Jacks's version is one of the fewer than forty all-time singles to have sold 10 million copies worldwide.

The song is a dying protagonist's farewell to relatives and friends. The protagonist mentions how hard it will be to die now that the spring season has arrived (historically, spring is portrayed as the season of new life).

The original French-language song is a sardonic ballad, in which the speaker gives backhanded farewells to his adulterous wife and her lover and the priest he disagreed with while sarcastically expressing his wish that there should be singing and dancing when he is buried. Before Jacks popularized the song, earlier recordings had been released by The Kingston Trio with the first cover version of McKuen's translation in 1963 and the British band The Fortunes in 1968.

Jacks's version was recorded in Vancouver in 1973 by Jacks and his wife at the time, Susan Jacks. They made the decision to record the song when The Beach Boys, who recorded a version with Terry Jacks producing, decided to abandon their recording.

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