It's the Wario Land 4 soundtrack... but not as you know it!
Remade with MIDIs ripped from the game ROM and good quality versions of the soundfont samples from WarioWare Mega Party Games, it's the soundtrack as it would have sounded on the Gamecube or other decent hardware.
Here's a YouTube...
UPDATE: The playlist is now COMPLETE! Check it out:
https://www.youtube.com/playlist?list=PLgIaslDc3IBsdbo1Hlrxhsr9oS3ZEjcKf
Download the album here:
https://www.dropbox.com/s/n2ggo0qsxd8sczh/Wario%20Land%204%20-%20High%20Quality%20Soundtracks.zip?dl=0
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So...