Halestorm's Lzzy Hale didn't respond to Sharon Osbourne's email inviting the band to perform at Black Sabbath's last-ever concert for two days - because she didn't know if it was "real".
The 41-year-old singer is the only woman who has been invited to perform at the star-studded 'Back to the Beginning' event, which will feature Black Sabbath’s original line-up, Ozzy Osbourne, Tony Iommi, Geezer Butler, and Bill Ward, as well as performances from Metallica, Slayer, Pantera, Gojira, Alice In Chains, and Lamb Of God among others.