Also, known as people's attempts to play the original songs from the Wario Land and WarioWare series without remixing them. Some cool ones:
Wario Land 4 Crescent Moon Village (metal/rock cover)
Wario Land 4 Toy Block Tower (classical cover)
Wario Land 4 Hurry Up (cover/remix)
Wario Land 1 final boss cover
Wario Land 3 Day Theme cover
Wario Land 3 Out of the Woods (drum cover)
https://www.youtube.com/watch?v=I2qFtFe7NG0
Wario Land 4 Mystic Lake (piano cover)
https://www.youtube.com/watch?v=DL9g1DOa9EE
Wario Land 3 main theme (piano cover)
https://www.youtube.com/watch?v=n7EcthVzsdw
Wario Land ending credits (cover)
https://www.youtube.com/watch?v=rWwsJnyskA0
Wario Land 4 Crescent Moon Village (metal/rock cover)
Wario Land 4 Toy Block Tower (classical cover)
Wario Land 4 Hurry Up (cover/remix)
Wario Land 1 final boss cover
Wario Land 3 Day Theme cover
Wario Land 3 Out of the Woods (drum cover)
https://www.youtube.com/watch?v=I2qFtFe7NG0
Wario Land 4 Mystic Lake (piano cover)
https://www.youtube.com/watch?v=DL9g1DOa9EE
Wario Land 3 main theme (piano cover)
https://www.youtube.com/watch?v=n7EcthVzsdw
Wario Land ending credits (cover)
https://www.youtube.com/watch?v=rWwsJnyskA0