VIDEO: Paul McCartney Wows With 'My Valentine' On 'SNL'

Paul McCartney, 70, who recently made headlines when he teamed up with surviving members of Nirvana Dave Grohl and Krist Novoselic at the 12-12-12 Hurricane Sandy benefit last week, reprised channeling Kurt Cobain on Saturday Night Live, where he once again took the stage with the formerly grunge rock legends to perform their new collaborated "Cut Me Some Slack."

For his other performance on his fourth SNL appearance as musical guest, McCartney also treated fans to "My Valentine," bringing out the Eagles' Joe Walsh to accompany him on guitar. McCartney even showed off his comedic chops when he got in the middle of a "Holiday Pageant" sketch with host Martin Short, which culminated in a rendition of McCartney's "Wonderful Christmastime," on which he was backed by a children's choir. The same choir opened the SNL episode with a performance of "Silent Night" to commemorate the victims of the Sandy Hook Elementary School shooting in Connecticut.

Watch the Saturday Night Live "My Valentine" video here:

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