NEW YORK: Lady Gaga has threatened hackers who leaked her new single on the internet, and asked fellow victim Katy Perry to join her. The singer was left fuming after Applause, due out on August 19, was leaked at the weekend, while Katy’s new track Roar was also leaked early. Gaga tweeted Katy, saying: “Wanna grab some shovels and shut up some hackers? @katyperry excited to hear your ROAR, sorry to hear about your truck!” The singer said she was disappointed and wanted her fans to hear the best quality version of her new song, not the pirated copy.–BN