Watch Rob Gronkowski Grace The Stage Of Paul Mccartney And Bob Weir

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The lyric “you may be a lover but you ain’t no dancer” has never held more true.

For the uninitiated, that is Bob Weir, formerly of the Grateful Dead, playing rhythm guitar next to McCartney.

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Weir’s current band, Dead & Company — which features John Mayer in the Jerry Garcia role of vocalist and lead guitarist — played at Fenway Park on Friday and Saturday night. Per JamBase, Weir’s two-song appearance with McCartney marked the first time that members of The Beatles and Grateful Dead have shared a stage.