Stereogum — The Grateful Dead’s Bob Weir and New England Patriots player Rob Gronkowski joined Paul McCartney onstage last night at Boston’s Fenway Park. The trio performed the Beatles’ “Helter Skelter,” as well as McCartney’s “One On One” and �... more info

JamBase — Watch the wild scene as Bob Weir and Rob Gronkowski sit-in with Paul McCartney at Fenway Park in Boston. more info

Time — “Gronk N' Roll" more info

Uncut — Letter begins "Dear Princely person"... Paul McCartney Letter begins "Dear Princely person"... The post Paul McCartney’s letter to Prince sells for £11,000 at auction appeared first on Uncut. more info

NME — Pair played 'Helter Skelter' and 'Hi Hi Hi' in Boston more info

Consequence of Sound — Members of The Beatles and Grateful Dead share the stage for the first time at Fenway Park. more info

411 Mania — Big money... more info

NME — "Dear Princely person," McCartney wrote in the note more info

MSN Music — McCartney has been seeing a lot of signs over his half-century-plus career--among them, plenty of dollar signs. He's earned $350 million over the past six years alone, making five appearances on our Celebrity 100 list along the way. Over the past... more info

The Mirror — A letter written by the Beatles singer to the star hit the auction block in Boston more info