NEW YORK (AP) — A part owner of Marvin Gaye's "Let's Get It On" is suing Ed Sheeran for $100 million after getting blocked from a similar lawsuit brought by other copyright owners. Both lawsuits say the British songwriter copied parts of the soul classic for his Grammy-winning hit "Thinking Out Loud." A lawyer for Structured Asset Sales said the new lawsuit's Thursday filing was necessary because a judge refused to let the company join a 2016 lawsuit by the family of a co-writer of Gaye's song.