While we know what Aquarius does when played by Doug, is this a guarantee that Evil Doug gets the same effect? I can easily see him using the song to create a simulacrum of Lovecraft's most infamous character. 
"Anyone can be a winner if their definition of victory is flexible enough." - The DM ofthe Rings XXXV
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"Anyone can be a winner if their definition of victory is flexible enough." - The DM of the Rings XXXV
"Anyone can be a winner if their definition of victory is flexible enough." - The DM ofthe Rings XXXV----------------------------------------------------
"Anyone can be a winner if their definition of victory is flexible enough." - The DM of the Rings XXXV