Country music star Martina McBride has abruptly pulled out of a massive Washington, D.C., concert tied to America’s 250th birthday celebration, claiming she was misled about what the event really was.

The “Independence Day” singer announced Thursday that she will no longer perform at Freedom 250 Presents: The Great American State Fair, a free 16-day festival scheduled to take over the National Mall this summer.

The event, which is connected to President Donald Trump’s America 250 celebration, is set to feature concerts, patriotic programming, military tributes, state showcases and special themed days honoring veterans, faith, health and American culture.

But McBride said she originally believed she had signed on for something very different.

“I was presented with the opportunity to perform at a nonpartisan event, but that turned out to be misleading,” McBride wrote on Instagram.

The country star said she asked “lots of questions” before agreeing to appear and was assured the festival would be a nonpartisan celebration of all 50 states.

“In my mind I thought this was a great way to celebrate the states and also bring people together in the way that only music can,” she explained.

Then, according to McBride, things suddenly changed.

“Yesterday things started changing and what we were told is, in fact, not what is happening,” she wrote.

McBride said the situation left her deeply upset, especially because she has spent her career singing songs about ordinary people, struggle, heartbreak and standing up for those who feel unheard.

“I’ve spent my entire career singing about real people with real issues,” she wrote. “I’ve been blessed with the opportunity to be a voice for those who have felt like they didn’t have one.”

She added that it hurt her to think any of her fans might feel betrayed by her name being attached to the festival.

“It greatly upsets me that any fan who has been moved by my music may now feel like I’m abandoning the meaning behind those songs,” McBride said. “I assure you, that is not the case.”

McBride had been scheduled to perform on June 25, the opening night of the festival.

And she is not the only big name backing away.

Bret Michaels, Young MC, Morris Day & The Time and The Commodores also reportedly dropped out after the lineup was announced this week.

Michaels issued his own statement Thursday night, saying he was initially told the event would be a patriotic music celebration honoring veterans, active-duty military members, first responders, teachers and hardworking Americans.

But he said the festival no longer looked like the event he agreed to join.

“Unfortunately, what was presented to us as a celebration of our country has evolved into something much more divisive than what I agreed to be a part of,” Michaels wrote.

Still, the lineup has not collapsed completely.

Vanilla Ice, Flo Rida and C+C Music Factory are still on board.

There was also confusion after Milli Vanilli was listed as part of the festival. Singer Jodie Rocco, one of the original studio vocalists behind the group, told the Associated Press that neither she nor any other member had been asked to appear.

However, surviving Milli Vanilli frontman Fab Morvan confirmed he plans to perform and said he is embracing the patriotic theme.

“I am here to entertain and unite people, not divide them,” Morvan said in a statement. “Let’s celebrate life & music and take a trip down memory lane.”

Vanilla Ice is also standing firmly behind the celebration.

A representative for the rapper said he is “proud to help celebrate America’s 250th Anniversary!”

“Everyone is welcome to attend and celebrate USA’s Birthday and our Freedom!” the rep added.

Freedom 250 was launched by Trump last year as part of the official lead-up to the nation’s semiquincentennial, marking 250 years since America’s founding.

The organization describes itself as a “national, non-partisan organization leading the celebration of our Nation’s 250th birthday.”

Former State Department official Keith Krach was appointed CEO.

The Great American State Fair is scheduled to run from June 25 through July 10 on the National Mall. The event is expected to include concerts, state showcases and special programming, including Military & Veterans Appreciation Day, Faith Values and Inspiration Day and MAHA Monday, a health-focused event tied to Health and Human Services Secretary Robert F. Kennedy Jr.’s Make America Healthy Again initiative.

But McBride’s sudden exit has already turned what was supposed to be a patriotic birthday bash into a political firestorm.

And with several performers now walking away, the festival is facing an early dose of drama before the first note is even played.