Steven Tyler of Aerosmith has demanded that Donald Trump stop using his song "Dream On" during his campaign appearances.

According to the Hollywood Reporter, Trump's staff have received two cease-and-desist letters from Aerosmith.

"Trump for President does not have our client's permission to use 'Dream On' or any of our client's other music in connection with the Campaign," reads the letter.

"It gives the false impression that he is connected with or endorses Mr. Trump's presidential bid."

Tyler's attorney says that the matter is one of copyright control.

"Steven works tirelessly with both Republicans and Democrats regarding copyright reform and his position has always been consistent regarding copyright and intellectual property.

Simply, one must get permission from the music creators.

Steven wrote 100 percent of 'Dream On,' and this is about the unauthorized use of his property."