Beach Boys: “Surfin USA” and “All I Wanna Do” (there are plenty of other examples too)
“Teardrops on My Guitar” and “Blank Space.”
65daysofstatic - “retreat retreat” and “sister.” One is definitive post-rock, plus an uplifting anthem for the band. The other is a slow, foreboding ambient electronic piece. No shared instruments, themes, or genres between the two.
How about “Young Lust” vs. “Great Gig in the Sky” by Floyd? Or pretty much any song from the Syd era.
Get Dead - Kerouac’s teeth vs Disruption
Get dead just goes on all my playlists they have a song to fit most my vibes