Coldplay and Michael J. Fox jammed together onstage in New Jersey last night (July 19th).
The band played a video from Chris Martin's son Moses, asking his father to play a song from the "greatest movie of all time".
Michael J. Fox then appeared onstage, re-creating his role in Back To The Future. Together, they played the old doo wop classic 'Earth Angel' before leaping into 'Johnny B. Goode'.
A clearly elated Chris Martin told the crowd that it was a "dream come true".
Watch the performance below.