With that, I have 50 songs (and quite a few associated flip slides) from 50 consecutive years, the first of which was the year my father graduated from college, and the last of which was the year my son was born.
And here they are in order. * = not on Spotify
1962: Marvin Gaye -- Hitch Hike (Flip side: Hello There Angel)
1963: The Kingsmen -- Louie Louie (Flip side: Haunted Castle*)
1964: The Beatles -- I Feel Fine (Flip side: She's a Woman)
1965: Bob Dylan -- Highway 61 Revisited (Flip side: Can You Please Crawl Out Your Window?)
1966: Otis Redding -- Try a Little Tenderness (Flip side: I'm Sick Y'all)
1967: Love -- A House Is Not a Motel (Flip side: Alone Again Or)
1968: Nazz -- Open My Eyes (Flip side: Hello It's Me)
1969: Sly and the Family Stone -- Everyday People (Flip side: Sing a Simple Song)
1970: Led Zeppelin -- Immigrant Song (Flip side: Hey Hey What Can I Do)
1971: Carole King -- I Feel the Earth Move (Flip side: It's Too Late)
1972: Stevie Wonder -- Superstition (Flip side: You've Got It Bad Girl)
1973: Betty Davis -- If I'm in Luck I Might Get Picked Up (Flip side: Steppin' in Her I. Miller Shoes)
1974: Funkadelic -- Red Hot Momma (Flip side: Vital Juices)
1975: Bill Withers -- I Wish You Well (Flip side: She's Lonely)
1976: The Spinners -- Rubberband Man (Flip side: Now That We're Together)
1977: The Kinks -- Jukebox Music (Flip side: Sleepless Nights)
1978: Daryl Hall and John Oates -- It's a Laugh (Flip side: Serious Music)
1979: The Clash -- London Calling (Flip side: Armagideon Time)
1980: Talking Heads -- Crosseyed and Painless (Flip side: The Great Curve)
1981: R.E.M. -- Radio Free Europe (Original Version) (Flip side: Sitting Still)
1982: The Jam -- Town Called Malice (Flip side: Precious)
1983: U2 -- Two Hearts Beat As One (Flip side: Endless Deep)
1984: Banarama -- Cruel Summer
1985: Husker Du -- Makes No Sense at All (Flip side: Love Is All Around)
1986: Eurythmics -- Missionary Man (Flip side: Take Your Pain Away)
1987: Guns 'N Roses -- Sweet Child O' Mine (Flip side: It's So Easy (live))
1988: Living Colour -- Cult of Personality (Flip side: Funny Vibe)
1989: Neil Young -- Rockin' in the Free World (Flip side: Rockin' in the Free World (acoustic))
1990: George Michael -- Freedom '90
1991: Nirvana -- Smells Like Teen Spirit (Flip side: Even in His Youth)
1992: Love Battery -- See Your Mind
1993: Pearl Jam -- Daughter (Flip side: Blood (live))
1994: Soundgarden -- Superunknown
1995: Truly -- Tragic Telepathic (Soul Slasher)* (Flip side: Blue Flame Ford*)
1996: Failure -- Sergeant Politeness
1997: Tsunami -- Enter Misguided
1998: AIR -- Kelly Watch the Stars
1999: The Flaming Lips -- Race for the Prize
2000: PJ Harvey -- This Is Love (Flip side: You Said Something)
2001: The White Stripes -- Dead Leaves and the Dirty Ground (Flip side: Stop Breaking Down (live))
2002: ...And You Will Know Us by the Trail of Dead -- Relative Ways (Flip side: Homage)
2003: Ted Leo and the Pharmacists -- Hearts of Oak
2004: Franz Ferdinand -- Take Me Out (Flip side: Truck Stop*)
2005: Beck -- Earthquake Weather
2006: Gnarls Barkley -- Crazy
2007: Miranda Lambert -- Gunpowder and Lead
2008: My Morning Jacket -- Remnants
2009: Phoenix -- 1901
2010: Teenage Fanclub -- Sometimes I Don't Need to Believe in Anything
2011: Adele -- Rolling in the Deep (Flip side: If It Hadn't Been for Love*)
Pip's Invitation to Awesomeness