To those who mentioned Seasons in the Sun - are you referring to the Terry Jacks version? Because the original Jacques Brel version (which is jarring because it combines pretty depressing words - as well as being more explicit about the wife's infidelity - with a very upbeat, almost march-like, tempo (and was reproduced more or less accurately by the Kingston Trio) in a way that's someone unusual for chansons) is probably more depressing, in an ironic way, as well as having been widely covered and, IIRC, even got translated into Arabic by a Lebanese rock band:
http://www.youtube.com/watch?v=6Jl-R2NhUiI
http://www.youtube.com/watch?v=6Jl-R2NhUiI