Will.i.am is at the centre of a dispute at the moment, as he's been accused of stealing the track for his new song 'Let's Go' from 'Rebound', a dance track produced by Mat Zo and Arty.
Whether Will.i.am did it or not, it's not the first time that a musician has been accused of stealing songs - or lyrics, melodies or even just "a catchy pop vibe that both draws people in and sticks in people’s heads," because it's not like there's much of that around in pop music.
Some of these won't be a surprise and some of them will, but we've got together 10 accusations of stars who are musical magpies. From Usher to Taylor Swift to even Lady Gaga, which stars have been accused of being musical thieves?
Take a look and find out...