A spontaneous duet with Bryan Adams and Justin Bieber happened recently at Universal Inside 2015 in Berlin. Bieber & Bryan performed Justin's hit-single "Baby" live and acoustic.

No one's quite sure why it happened. Perhaps to promote the Canadian superstars' new albums - Justin's is coming out on Nov. 13th, while legendary rocker Bryan Adams is set to release "Get Up" on Oct. 16th — but regardless, the crowd, and now the internet, is abuzz.

"...add Bryan Adams on acoustic guitar, and, well, we're all a little enamored of this unexpected pairing," said New York Magazine, and we couldn't agree more. How can you not love anything Bryan Adams does?

Could this mean a future duet with two of Canada's most famous musicians?

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