Read this: Download Festival’s 17 most memorable moments ever
Now, Andy remembers of that very special day: "Download 2004. The year where there was a no-show from Metallica's Lars Ulrich. I remember receiving a call telling me to go backstage where I was given the news. There were two choices a) do Metallica cancel? or b) do Metallica convince other drummers on site to fill in? I suggested they cancel because I just couldn't see b) happening, particularly as quite a few drummers that were asked said no.
"One guy who stepped up was Slipknot's Joey Jordison," he continues. "The story was he'd played in a Metallica covers band prior to joining Slipknot, so knew a lot of their songs. Joey, along with Slayer's Dave Lombardo, saved the day. Seeing Joey play with Metallica in his Slipknot mask was something I will never forget. Thank you, Joey – you were a giant. RIP."