After threatening a lawsuit against Donald Trump and his presidential campaign over the weekend, the White House candidate’s lawyers continue to ignore the family of late soul icon Isaac Hayes, as they allegedly have done for years. Meanwhile, the artist’s son and a lawyer representing the Hayes family have sought to block the use of an early hit by the singer at rallies and events, both claimed Monday.

Isaac Hayes III, the son of the Grammy-winning soul legend, confirmed with The Hollywood Reporter which he posted online over the weekend — that the family plans to file a lawsuit against the Trump camp for using the Sam & Dave hit “Hold On, I’m Comin'” at his rallies. Hayes said that by his count, the song has been used 135 times in recent years without Trump’s team ever asking permission or paying for the soul classic’s license.

The song was the first hit Isaac Hayes co-wrote and was first heard at an event for Trump in Montana on August 9. Hayes recalled hearing it as early as 2022 at a National Rifle Association rally held in the wake of the Uvalde school shooting that killed 19 children and two adults. That Trump ended his speech with this song, which he danced to, is particularly egregious to Hayes. Given the title and the fact that the song was played some 300 miles from the tragic mass murder that took aim at the slow response of local police, Hayes is annoyed that he would use the song to promote guns.

“I was angry,” said Hayes THR. “There just happened a mass shooting, so why are we using it at the NRA convention? I wanted to take legal action because Trump has made statements against women and here is a man who has been convicted of sexual assault. I am the brother of seven sisters and I don’t want anyone to think of ‘Hold On’ and Donald Trump.”

Over the course of his three campaigns, several artists and music groups have made public statements that Trump and his campaign have used their copyrighted songs without legal permission at MAGA rallies and campaign events, often to inflame crowds or provoke emotional responses. Like Hayes, Adele, Earth Wind and Fire, Tom Petty’s estate and John Fogarty have also issued statements urging the campaign to stop doing so. Last week, Céline Dion also took to social media to disavow the use of “My Heart Will Go On” at a rally.

Under copyright law, a party who feels they have been wronged has certain deadlines to notify the alleged offender and must then begin certain procedures. James L. Walker, an attorney for the Hayes family, said the complaint must be filed now to ensure the case begins before the deadline.

“Ultimately, I think Isaac (Jr.) was being nice in asking him nicely to take it down. And when someone doesn’t respect your time, you have no alternative but to take the matter to court. Both he and the late Hayes’ son received radio silence from Trump’s lawyers and his administration staff, they said.

But why is Hayes one of the few people threatening to sue the former president and currently hoping to return to office in November? According to Walker, it is mainly because of the hassle and expense that a lawsuit against Trump would entail.

“Most of these artists just don’t want to take the time, or the smaller artists don’t have the financial means. And Mr. Hayes is in that rare category where he knows copyright. He knows how to protect himself, how to protect his releases. So he knows that as well as anyone, if not better,” Walker explained.

Hayes also said the estate only acquired the rights to the 1966 classic, to which Trump casually danced onstage alongside NRA leadership, in 2022. Copyright protection begins when the work is first published and runs for a period of 28 years, which can be renewed for an additional 28 years, for a total term of 56 years.

As for the potential case, both Walker and Hayes are confident they would win. Walker explains that the copyright law is pretty clear and Trump would lose his case and have to pay far more than $3 billion.

“I expect a complete removal of the song and the amount demanded,” Hayes said. “And never, ever use that song again.”