See them perform "You Shook Me All Night Long"
And the "most unlikely duet of last weekend" award goes to... ACDC’s Brian Johnson and Billy Joel.
The NY singer songwriter is in the middle of a residency at Madison Square Garden. Johnson took to the stage about halfway through Joel's show on Friday night, and was introduced by Joel who referred to AC/DC as "maybe the best band I ever saw in my life".
The pair sang "You Shook Me All Night Long" - you can see footage below!