Contribute correction: Metallica demo

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  ____     /_   _// |  __ \\    / _ \\  
 |    \\    -| ||-  | |  \ ||  | / \ || 
 | [] ||    _| ||_  | |__/ ||  | \_/ || 
 |  __//   /_____// |_____//    \___//  
 |_|`-`    `-----`   -----`     `---`   
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