Donald Trump is no stranger to p*ssing people off, but this time he's got on the bad side of rock icon Neil Young.

Trump has been using Young's track 'Rockin' in the Free World' for his presidential campaign - it played over his announcement speech on Tuesday - and the singer is not happy about it. At all.

Young released a statement that said "Donald Trump was not authorised to use 'Rockin' In The Free World' in his presidential candidacy announcement. Neil Young, a Canadian citizen, is a supporter of Bernie Sanders for President of the United States of America."

In turn, Trump's camp denied that they had not had permission to use the track, saying that they had obtained a licensing agreement.  "Nevertheless, there are plenty of other songs to choose from," a statement read. "Despite Neil's differing political views, Mr Trump likes him very much."

It's not the first time that politics and music have clashed; UK Prime Minister David Cameron has been effusive in his admiration of '80s indie band The Smiths, which has irked both Morrissey and Johnny Marr. The latter tweeted "David Cameron, stop saying that you like The Smiths, no you don't. I forbid you to like it."