Katy Perry’s new mega-single “Roar” which was released last Monday is most likely to outsell “Applause” by Lady Gaga and reach 550,000 downloads sold by Sunday, according to Billboard. If this happens, this will be not only biggest sales week of the year for a song, but also Perry’s largest sales week ever.

Sunday came, but the official sales figures by Nielsen SoundScan will be announced this Wednesday, August 21. Until then, fans can still download “Roar” on iTunes from Apple App Store for only $1,29. One Direction’s latest song, “Best Song Ever” from the EP This Is Us, is also available for download for $1,29. Last week, their new tune “Just Can’t Let Her Go” out of their upcoming album leaked online, so we can soon expect an official release. Miley Syrus announced that her new album, “Bangerz” will be released on October 8. It will feature 8 songs, including her latest hit, “We Can not Stop”, as well as collaborations with Pharrell Williams, Future and Dr. Luke. The single “We Can’t Stop” was out for download on June 3, 2013 for $1,29 on Apple Store.