Pop singer Katy Perry has come under fire from music producer Dillon Francis over allegations she copied ideas from one of his music videos for her Roar promo.
Perry has bounced back to the spotlight with her new single, which is accompanied by a video revealing the song's lyrics on a mobile phone in a text message format.
Francis, who will be coming to New Zealand to perform at the Big Day Out in January, has accused Perry of lifting the idea for the promo from his video for the 2013 single Messages.
"Katy Perry steals my Messages music video idea ... What the f***?... Hey Katy Perry why?" Francis tweeted.
"Legitimately this is so dope (good) that Katy Perry's director thought my video was good enough to rip off," he added.
This is the second controversy surrounding Perry's new single after a number of fans expressed concerns about the track's similarity to a song called Brave by Sara Bareilles.
A mash-up of the two songs has since appeared online.
In May, Perry complimented Bareilles for Brave by tweeting her about the track.
"I heart you @Sarabareilles," she tweeted at the time.