Band will join Bruno Mars as special guests at at American Football bash    

Singers both illegally downloaded more than five million times this year    

Rudimental will also perform at ceremony, which takes place in February    

By Piya Sinha-Roy LOS ANGELES (Reuters) - Justin Timberlake, Taylor Swift and Macklemore & Ryan Lewis led the early winners at the American Music Awards on Sunday, as some of pop music's biggest names came together for the fan-voted awards ceremony. Timberlake, 32, picked up the prize for favorite male artist, beating out R&...

Singer posted the so-called 'G-Mix' on Twitter