Brandy Norwood and Monica Arnold’s Saturday, October 18, The Boy Is Mine Tour concert came to a screeching halt.

The two singers were in the middle of performing one of their duets on Saturday when Brandy, 46, suddenly walked offstage, according to social media footage.

“Wait, what? We’re all in shock,” one fan wrote via X. “How come Brandy left the stage halfway through the #theboyisminetour? No one knows what happened, but Monica had to close the concert alone and they didn’t sing ‘The Boy is Mine.’ She was [also] having audio problems.”

Neither Brandy nor Monica, 44, have publicly addressed the situation. Us Weekly reached out to reps for both stars for comment.

Brandy and Monica, known for their hit 1998 duet “The Boy Is Mine,” kicked off their joint tour earlier this month.

“This Moment These Times Our Music,” Brandy and Monica captioned a joint Instagram post on Friday, October 17. “We are proud of us and pray each night you all are proud of us as well. #BiggerThanMusic.”

The dynamic duo announced their coheadlining tour in June, revealing via social media that they would be performing across 27 cities in the United States from October to December.

“Monica and I coming together again isn’t just about the music — it’s about honoring where we came from and how far we’ve both come,” Brandy said in a statement at the time. “‘The Boy Is Mine’ was a defining chapter in R&B, and to share the stage all these years later is bigger than a reunion — it’s a celebration of growth, sisterhood and the love our fans have given us from day one.”

Monica echoed her fellow performer’s sentiments in her own statement.

“This tour is a celebration of our history, our impact, and the fans who have grown with us,” she wrote in a press release. “Brandy and I have been on our own unique journeys, and coming back together in this way is a reminder of the power of respect, strength and real music. We’re giving the people what they’ve been asking for, and doing it with grace, love and purpose. God’s timing perfectly aligned us.”

Monica later told Essence earlier this month that the Boy Is Mine Tour was a work of “divine timing.”

“Stepping into this tour feels like a full-circle moment,” Brandy added to the outlet. “It’s a chance to honor where we’ve come from, to celebrate the people who’ve supported us from the very beginning, and to share the stage in a way that feels fresh, powerful and deeply connected to who we are now. It’s emotional, it’s inspiring and it reminds me that music really is timeless.”

She continued, “When we’re together, it creates a sense of balance and support that allows me to be fully present. Sharing that bond with her goes beyond the music — it reflects a mutual respect and understanding that’s been built over years of experiences.”

The Boy Is Mine Tour will also feature special performances from guests Kelly Rowland, Muni Long and Jamal Roberts.