just gonna let myself be #wrong without fact checking what decade these were from and it changes by the day but:

#60s: Foxy Lady - Kimi Hendrix
#70s: YYZ - Rush
#80s: Finky Town - ?
#90s: Amish Paradise - Wierd Al
#2000s: 1999 - Prince
#2010s: Believver - ?
#2020s: Tie between @sknob's "About Time" and My Nephew Kyle's digitally unreleased mixtape version of "young, wild, and free" in which Kyle thanks us for being his #music crew