Chris Brown took fans on a trip down memory lane after performing a song with former collaborator Jordin Sparks during the final show of his most recent tour.

According to That Grape Juice, the 33-year-old singer has been traveling for the North American leg of his “One of Them Ones” tour for the past few months.

Brown invited Sparks to join him on stage as a surprise to sing their iconic song “No Air” after more than a decade of not performing the track to close and celebrate the success of his shows.

Sparks revealed on her official Instagram account that they haven’t performed the song in over 15 years in a fan-shot video.

In the clip, the singer can be seen singing her part while the audience joins in.

She wrote in the post’s caption:

“Thank you Chris for having me at the final stop of your ‘One of Them Ones’ tour, ended it with a bang in Vegas!!!”

She went on to say that the audience was “lit,” as she could hear them scream every word of the song.

According to Billboard, the song was originally intended for a solo male singer, but when Jordin Sparks heard it, she was drawn in and wanted to record it.

It was written by Steven Russell, James Fauntleroy II, Damon Thomas, Erik “Blu2th” Griggs, and Harvey Mason Jr. One of the writers agreed for Sparks to take the song on the condition that she duet it with another artist, which led Mason to suggest Chris Brown.

“No Air” went on to achieve massive success, winning a “Choice Hook-Up” award at the 2008 Teen Choice Awards.

The song was also nominated for Grammy Awards for Best Pop Collaboration with Vocals, NAACP Image Awards, MTV Australia Awards, and MANY MORE.

The song did not have a successful start on the Billboard Hot 100 charts when it was released, peaking at number 95 on the week of January 19, 2008.

However, as the weeks passed, it rose to the top three, making it Sparks’ highest-charting song from her music catalog. It also reached No. 4 on the Hot R&B/Hip-Hop Songs chart.