The Pop song that Nintendo copied

If you know your Mario music, then this old pop song might sound familiar. Did Nintendo steal it? And why do they sound so similar?

PATREON -   / thomasgamedocs  
TWITTER -   / thomasgdocs  
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SOURCES
- https://ameblo.jp/nasunikki/entry-100... Interview about meaning of Japanese lyrics to Green Green
- http://shmuplations.com/kojikondo/ The two Koji Kondo quotes come from this interview
- https://symphogear.blogspot.com/2016/... Writeup of Green Green’s history (though I wish I had found this before I’d written most of the script myself!)
- https://archive.org/details/japan_mir... Archive Footage of 1960s Japan

CREDITS
-    • グリーン・グリーン   Japanese kids singing Green Green
-    • Mrs.GREEN APPLEカバー曲「グリーン グリーン」   Mrs. Green Apple cover of Green Green (bad audio I'm afraid)

MUSIC
- Super Mario World Theme composed by Koji Kondo, via Nintendo
- Stock music via Epidemic Sound