Axl Rose paid tribute to Biz Markie at Thursday’s Guns N’ Roses show at Met Life Stadium.

Rose dedicated “Knockin’ On Heaven’s Door” to the late rapper, and later sang a few lines of “Just A Friend” before launching into “November Rain”. Axl and Biz apparently met at least once – Rose says they met in 2006 and that Markie was impressed by his car.

What’s the most surprising cover song you’ve ever seen at a concert?

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