US President Donald Trump on Thursday announced a mass rally in Washington on June 24 to celebrate America's 250th anniversary, saying he'd canceled planned concerts after several artists pulled out.

"In celebration of our Country's 250 Year History, we will be bringing you, LIVE, the Greatest Rally, EVER! It will be special at every level — A Rally to end all Rallies!" Trump said on his Truth Social network.

"We don't want singers with no talent, but big fees to put you to sleep, we've told them all to stay home," added the 79-year-old Republican.

"All we want is you, me, a few speakers, and the Greatest Music ever played, the same Music you have listened to for years!"

Trump said these would include Lee Greenwood, the singer of "God Bless the USA," a staple of his political rallies.

The rally would also feature US military bands and choruses, "all of your favorite Hits, PLUS a fine and highly dignified gentleman known as, President DONALD J. TRUMP!"

Trump had previously suggested holding a rally for his "Make America Great Again" (MAGA) movement but he did not mention that in his announcement on Thursday.

Trump has tried to stamp his mark on America's 250th birthday, most notably by staging a mixed martial arts fight in a specially constructed arena on the White House lawn on June 14 - his 80th birthday.

But the celebrations have become increasingly complicated.

Shortly after they were announced as performers in a Washington concert series around the July 4 holiday, multiple musical acts backed out, with some citing the event's politicization.

They include country singer Martina McBride and glam rocker Bret Michaels, frontman of 1980s band Poison.

The concerts were scheduled to kick off on June 25 as part of major events on the National Mall organized by Freedom 250, a Trump-backed public-private entity.

The remaining line-up of musicians, including Vanilla Ice and C+C Music Factory, has sparked a flood of sarcastic comments on social media.

Trump said in his full post:

"On Wednesday, June 24th, at 7 P.M., in magnificent Washington, D.C., now totally beautified, and one of the Safest Cities anywhere in the World, and in celebration of our Country’s 250 Year History, we will be bringing you, LIVE, the Greatest Rally, EVER! It will be special at every level — A Rally to end all Rallies! We don’t want singers with no talent, but big fees to put you to sleep, we’ve told them all to stay home. All we want is you, me, a few speakers, and the Greatest Music ever played, the same Music you have listened to for years! We will have the fabulous Lee Greenwood introducing me with what has turned out to be one of the Greatest Hits of All Time, GOD BLESS THE U.S.A., and the amazing Christopher Macchio, who will sing Nessun Dorma, Hallelujah, Ave Maria, God Bless America, and others — Not since the legendary Luciano Pavarotti has there been such a voice! The Rally will also be featuring the wonderful U.S. Army Band “Pershing’s Own” and Armed Forces Choir, and “The President’s Own” Unites States Marine Band, with the Joint Armed Forces Chorus, all of your favorite Hits, PLUS a fine and highly dignified gentleman known as, President DONALD J. TRUMP!"