Ed Sheeran is facing a $100 million lawsuit that alleges his 2014 hit “Thinking Out Loud” for too closely resembling Marvin Gaye’s 1973 “Let’s Get It On.”

The suit was filed by company Structured Asset Sales, which owns one-third of the copyright of Gaye’s song.

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The lawsuit alleged Sheeran for using the same “melody, rhythms, harmonies, drums, bassline, backing chorus, tempo, syncopation and looping as ‘Let’s Get it On.'”

Ed Towsend’s family, co-writer on “Let’s Get It On,” previously sued Sheeran in 2016 for the same reasons. TMZ obtained the 2016 documents last week, which revealed Sheeran responded that the chord progressions and drum patterns are “extremely commonplace” and therefore unprotectable in the public domain.

At the height of its popularity, “Thinking Out Loud” sat at No. 2 on the Billboard Hot 100 and was certified “diamond” by the RIAA for the streaming-equivalent of 10 million copies sold. In 1973, “Let’s Get It On” topped the Billboard singles chart and is considered platinum by the RIAA.

Robin Thicke, was forced by a court to give up $5.3 million in March 2015 for copying Gaye’s “Got To Give It Up” in “Blurred Lines.”

The singer mentioned Sheeran in a tweet, telling him to give him a call.

He was also sued for his song “Photograph” by the writers of “Amazing,” a song released by singer Matt Cardle, winner of the seventh season of U.K.’s The X Factor. 

Listen to both songs below.