I didn't know what to call this theme, I already have one called just “wario land 4” so...yeah.

Anyway. As always, everything I used to make this theme are sprites and resources from the game, taken (almost everything) from TSR!
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Credits:

Wario sprites by: A.J Nitro and Ranom Talking Bush. Kuro Neco sprites by: darkbolt99. Title screen sprites by: Linkin800. Scienstein sprites by: Robbydude.
Bonus/Pink rooms backgrounds by me.
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I think that's all, good afternoon :)

Main theme/Title screen - Ryoji Yoshitomi