The crowd, perhaps expecting Young's encore set-closer of the Fab Four, went wild when McCartney ran on stage right on time for the middle section.

Young and McCartney hugged and sang together, and then Macca darted off to thunderous applause. But as Young proceeded to wreak havoc on Old Black, his trusty '53 Les Paul - another nightly ritual - for the song's crescendo, McCartney came back out to take part in the fun.
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