Last year, Marvin Gaye's estate successfully brought a very high profile lawsuit against Pharrell Williams and Robin Thicke for their alleged plagiarism of Gaye's song 'Got to Give It Up' on their smash hit 'Blurred Lines'.

Now, Ed Sheeran is being sued for similar reasons - allegedly coping Marvin Gaye's track 'Let's Get It On' for his biggest hit to date, 'Thinking Out Loud'.

Reuters report that documents were filed yesterday by the heirs of Ed Townsend, who co-wrote the track with Gaye, alleging copyright infringement.

The lawsuit says that "that the harmonic progressions, melodic and rhythmic elements central to "Let's Get It On" formed the structure of Sheeran's "Thinking Out Loud" and that "The Defendants copied the 'heart' of 'Let's' and repeated it continuously throughout 'Thinking". The melodic, harmonic, and rhythmic compositions of 'Thinking' are substantially and/or strikingly similar to the drum composition of 'Let's.'"

It's the second lawsuit alleging plagiarism filed against Sheeran in recent months; in June, the writers of Matt Cardle's song 'Amazing' brought a $20 million lawsuit against him for alleged plagiarism on his song 'Photograph'.

A representative from Sheeran's camp has yet to comment, but what do you think? Is there a similarity? Vote in our poll below...