Joni Mitchell was met with a standing ovation after she took a brutal swipe at Donald Trump and encouraged her fans to vote in next month's 'important' election.

Mitchell, 80, on Saturday night used her first headline concert in Los Angeles in 24 years to demonstrate her disapproval of Trump, while also rallying people to 'get out and vote'.

'Fuck Donald Trump!' the legendary Canadian singer-songwriter told the crowd after an audience member yelled out a dig at Trump. 'I love that song,' she added, seemingly referencing the 2016 rap protest song 'FDT' by YG.

Mitchell's dig at the GOP nominee came after she performed her 1985 hit Dog Eat Dog, where she sings about people who 'lie, cheat, skim, scam'. But this time around she actually namedropped Trump in the song, Billboard reported.

The performer then urged her fans to hit the polls on November 5, sharing how she wants to vote but cannot because 'I'm one of those lousy immigrants'.

Nearly everyone in the 17,000-strong crowd at the Hollywood Bowl on Saturday rose to their feet to applaud Mitchell after she criticized Trump.

She had just completed an ad-libbed rendition of her song Dog Eat Dog, where after singing a lyric about 'snakebite evangelists and racketeers and bigwig financiers' she slipped in the words: 'like Donald Trump'.

After she finished the song, a member of the crowd shouted out an insult at the former president, which Mitchell obviously heard.

The 80-year-old chuckled before referencing YG's 2016 song FDT, which slams Trump's political agenda and bid for the White House.

She then encouraged 'everybody' to 'get out and vote.'

'This is an important one. I wish I could vote. I'm a Canadian. I'm one of those lousy immigrants,' Mitchell added, an apparent dig at Trump's anti-immigration remarks.

Her commentary is just the latest instance in which a musician has publicly denounced the 78-year-old former president.

Some of the world's best known acts - including Neil Young, Bruce Springsteen, Rihanna, and Swedish pop group ABBA - have objected to Trump using their songs during his campaign events.

Similarly, Taylor Swift last month backed Kamala Harris and urging her fans to register to vote in a social media post that she signed 'Childless Cat Lady', a phrase Trump's running mate JD Vance once used to mock Democrats.