One of the new ones!!!....
In the original YI theme I made, I used the “athletic” theme, even though the theme was clearly based on 1-1, because I hadn't planned on making any more YI themes, so I thought I should use the most beloved/memorable theme from the game and well...that's it.
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Credits:

Baby Mario sprites by: Dazz & Ton. Yoshi (disassembled) sprites by: sonicfan32. Goonies sprites by: Cheeseman. Green glove and Slugger sprites by: Binarystep & MarioFanGamer. Various enemies sprites by: Bacon & Ton. 1-5 level by: Barack Obama. Clouds (cummulus) sprites by: playgames169vg. Flying goonies background, standard gradients, balloons sprites and intro backgrounds by: MarioFanGamer. Sea/ocean backgrounds by: JigglyPuffGirl & Barack Obama.
Title screen (night version) (SMA3:YI) by: jackster (only for the logo).
Sound effects by: Raccoon Sam and Yingchun Soul.
Folder and icon templates by: Ryumaru.
Icon texture and other sprites (rip) by me.
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Athletic (SM:YI-OSV) - Koji Kondo