In recent years, BMI and ASCAP have written exemptions into these contracts giving musicians the right to stop a politician from using their songs. Steven Tyler of Aerosmith had his music removed from Mr. Trump’s licenses with both BMI and ASCAP, according to his lawyer, Dina LaPolt.

“Before Trump was even elected president, he was using Steven’s songs,”LaPolt said. “Fans and colleagues and even loved ones were very confused because it looked like he was endorsing Trump.”

LaPolt had to send numerous letters to the Trump campaign. She argued that playing Tyler’s songs at rallies was creating a false impression that he was a Trump supporter, an argument that Rihanna’s lawyer also made.

This past August, LaPolt finally received the answer Tyler had been hoping for. Jones Day, the law firm that represents the Trump campaign, wrote a letter saying, “Without admitting any liability, and to avoid any future dispute, we send this response to confirm that the Trump campaign will not use your client’s music in connection with its activities going forward.”

On Twitter, Rose accused the Trump campaign of relying on venue licenses to defy the group’s demand to be excluded from the playlist.

“Unfortunately the Trump campaign is using loopholes in the various venues’ blanket performance licenses which were not intended for such craven political purposes, without the songwriters’ consent,” Rose said, in a tweet that ended with a poop emoji.