The speculation heated up in March, when Slipknot posted a photo of a broken drum stick on Instagram ... including a headline set at Knotfest Iowa in September, which will be their first show ...

There’s this dude on ‘Gram who goes by the handle ipaddrummer, and his whole schtick is — you guessed it! — creating drum covers on his iPad. To date, he’s done tracks by bands like Metallica, Iron ...