Last year, Azealia Banks was in the studio with Lady Gaga working on 'Red Flame', a demo that wasn't supposed to lead anywhere, but now a track of the same name has appeared on Gaga's ARTPOP and Banks is accusing Mother Monster of plagiarism.

"Make sure u let them know where u got the title for red flame from. U stole that from the demo I sent u," Banks tweeted last Tuesday. "Life is great. You can have it. Plenty more where that came from. Seriously. . . This one is free. Next time I'm charging."

While Gaga has still to comment on the accusations, Banks' posts have been deleted. This is not the first online beef the two girls have: last month the rapper accused Gaga of stealing her mermaid-inspired look at MTV Video Music Awards and iTunes Festival. Banks has also referred to the chart battle between Gaga's 'Applause' and Katy Perry's'Roar', tweeting "Team Katy".

See also: Azealia Banks reveals debut album tracklisting