Music producer Michael Jonzun claims that Paul Anka and Michael Jackson owe him at least $24 million for his work on "This Is It."
Jonzun is suing Anka and the Michael Jackson Estate for the money, TMZ reports.
He has filed the lawsuit in Massachusetts federal court, where he claimed that he helped originally make the 1983 song "I Never Heard" which eventually became the 2009 song "This Is It."
The suit says Jonzun owns 1/3 of the song, but he has never been paid for the proceeds the song has made.
Paul Anka says that he has never heard of the producer before today, and that any ownership claims Jonzun makes are complete "BS."