Well, this is certainly odd, if not a little intriguing and 100% random,

Given Justin Bieber's current 'bad boy' persona, an early hit of his like 'Baby' seems too sickly-sweet to sit with his current material - but he pulled it out of the bag during a performance in Germany yesterday.

Bieber was joined by none other than Bryan Adams on guitar for an acoustic version of the song during the Universal Music Group conference at Berlin's Mercedes-Benz arena. Gotta keep the bankrollers happy.

Watch the bizarre footage below: