Stell Ajero, a member of the popular group SB19, made an unexpected and thrilling appearance at the "Hitman David Foster and Friends Asia Tour 2024" during a spectacular concert held at the Araneta Coliseum in Araneta City on June 18.

The 29-year-old singer with a wide vocal range opened the two-hour show, featuring Brian McKnight, All-4-One, Katharine McPhee and new OPM artists JV Decena and Joaquin Garcia.

The crowd erupted in cheers as Stell took the stage. He kicked off the much-awaited show with the soulful "All I Ask," a song made famous by British chanteuse Adele. The energy in the arena was palpable as he followed it up with his solo debut single, "Room" and "Defying Gravity."

But it was during the middle part of the concert that Stell almost stole the "Hitman" show. Stell sang "All By Myself," which left the audience in awe. 

David shared a backstory when he first offered "All By Myself" to Celine Dion, originally done by Eric Carmen in 1975. He said that Celine initially complained about the high notes in some parts of the song.

"When I was doing this song with Celine, she really complained about this high note in the song. It's an impossible note to sing and she hated me in the studio that day.

"If you ever read her book, pages 37 and 38, she devotes two pages to how much she hated me that day in the studio.

"But we got the job done. She hit the high notes and it took her a few tries. Tonight, my friend Stell, you only get one try," David said. Then the crowd cheered again.

David showed the clip of Celine talking about the high notes in "All By Myself."

Celine said: "David Foster called me, and I was in Montreal, and he was in California. He said, 'You're gonna freak. It's so amazing. And I said, 'Oh okay." It's a new track.

"And then the key that we have agreed on, he changed it to a key and a half. I said, 'David, how could you do that?"

"Then David said, 'If you can't do that, there are other singers that can. And that's all I need to know to hit the notes," said Celine.

David told the crowd in Araneta: "That's a true story. I said to her, 'Hey if you can't do it, there are other singers next door that can do it. Actually, Whitney Houston was in the other studio, but I didn't say her name. Anyway, it was all for fun and Celine hit the notes."

Celine's cover of "All By Myself" peaked at No. 4 on Billboard's Hot 100 singles chart in the US when it was released in 1996.

After performing "All By Myself," the crowd let out a deafening roar of cheers as they celebrated the moment.

A few hours later, Stell trended on social media with clips of his performances from the "Hitman" concert. On X, Stell wrote: "Thank you, Lord. The best ka po talaga."