Underwater (Super Mario Bros.) (OST Version) - Super Mario Maker 2

"Underwater (Super Mario Bros.) (OST Version) - Super Mario Maker 2" is a high quality rip of the OST version of the Super Mario Bros. version of "Underwater" from Super Mario Maker 2.

Joke
At 0:03, the melody changes to "Drusselstein Driving Test Waltz" from the Phineas and Ferb episode "The Doonkelberry Imperative".