Maple Treeway is a Mario Kart Wii track. The visuals and audios are both amazing in my opinion.
This sheet is the background music of Maple Treeway, composed by Koji Kondo and owned by Nintendo
You should be able to find OST absolutely everywhere on the Internet, so I'm not linking you to the source.
Download MSCZ
Link to Musescore Page
Although this is not a remix but a mashup, let's put it here anyway.
(Click on the sheet again or press Escape to exit)
(Touchscreen users can tap on anywhere to exit)