Katy Perry pamer preview lagu baru lagi. Kali ini, preview "Walking On Air" ia pamerkan lewat soundcloud 99.9 Virgin Radio.
"Remember these are NOT singles, just tastes to enjoy! #ROAR is still ROARING & 2nd single from PRISM will not be announced for some time..." kicau kekasih John Mayer ini.
Dengarkan preview-nya di bawah ini: