If I have a song that I think belongs in my 80's and 90's mixes I give it a year of 1990. For my 80's music playlist I use 1980-1990 and for 90's music I use 1990-2000, so the song will be incuded in both playlists.
I do this for any song that I think should be included in two different decade mixes.
This one is a winner.