The tunes included Leonard Cohen's "Hallelujah," as covered by the singer Rufus Wainwright in the film "Shrek." Now, Wainwright and Cohen's estate are taking issue with Trump's use of the song, with the popular singer writing on social media that "witnessing Trump and his supporters commune with this music last night was the height of blasphemy.

Musician Rufus Wainwright said he was “mortified” that former President Donald Trump used his cover of the Leonard Cohen song “Hallelujah” at a bizarre campaign rally on Monday.