British singer-songwriter Ed Sheeran is facing a $20 million lawsuit alleging he used another song as the basis for his international hit "Photograph."
The suit accusing him of copyright infringement was filed Wednesday in Los Angeles by Martin Harrington and Tom Leonard, composers of the song "Amazing."
City News Service cites court documents that say "Amazing" and "Photograph" are nearly identical in pitch, tempo and structure.
A message seeking comment from Sheeran's representatives wasn't immediately returned Thursday.
"Amazing" was recorded and released as a single by Matt Cardle, winner of the 2010 season of TV's "The X Factor." Cardle is not a party to the lawsuit.
"Photograph" topped pop charts throughout the world and sold more than 3.5 million copies.