Bryan Adams

Video of the incident has gone viral.

He dug out a rarity while she debuted a new song during show.

"The aim of this song is to provoke thought and perhaps even encourage governments to sit down and talk peace," he says.

British vocalist admits he "mouthed off" too much about similarities between both artists.

Track from Canadian native's third album had been written before his first album was even released.

Dates from June to August continue Canadian rocker's So Happy It Hurts road trip.

But rising Canadian star gave him credits on ‘Cuts Like a Knife’ album anyway, Foreigner vocalist recalled.

He had ambitious goals, and the album handily exceeded them.

The stars were forced to cancel separate live appearances after positive tests.

Canadian is pleased to hear that song remains a regular part of band's live shows 40 years later.