Kelly Clarkson and Pink are not only incredibly talented pop singers, they are good friends, too. That’s why it’s always a marvel to see them perform together, as their chemistry enhances their harmonies every time they take the stage side by side.

As a tribute to Pink, who was bound to receive the Icon award, Clarkson sang the first verses of Pink’s “Just Give Me a Reason.” Instead of following the dance pop sounds of the hit song, Clarkson’s version was slower and evocative, as she was accompanied by a dozen violinists. Pink, who had been watching from her seat, rose with her own microphone in hand and walked to the stage to join Clarkson, making the crowd cheer in excitement.

Clarkson eventually walked off, leaving Pink to sing a medley of her songs “What About Us” and “Who Knew.” As she was joined by back up dancers, Pink turned the ceremony into a party, true to the nature of her cheerful and inspiring music.

Moments before Clarkson took the stage, Pink was honored by yet another music legend—Pat Benatar. The “Love Is a Battlefield” singer was joined by her husband and guitarist Neil Giraldo in a rendition of “Just Like a Pill,” which matched the rock energy of the 2002 single.