 In summer 2011 , Diamandis and Swedish recording artist Robyn performed as the opening acts for American recording artist Katy Perry 's California Dreams Tour . On 30 September , Diamandis released the track " Radioactive " through the iTunes Store ; it peaked at number 25 on the UK Singles Chart . Her second studio album was preceded by its lead single " Primadonna " in April 2012 ; the song is notable for being Diamandis 's highest @-@ charting track on the UK Singles Chart , where it reached number 11 . It is certified silver by the BPI and platinum by the respective authorities in Australia , Denmark and New Zealand . 
