Jam! Showbiz Music, Canada — Paul McCartney surprised fans at the Desert Trip festival on Saturday by introducing Rihanna to the stage. more info

ET Online — And who said this is your parents' Coachella? more info

L.A. Times - Entertainment — When Rihanna joined Paul McCartney in a surprise appearance to sing “FourFiveSeconds” at Desert Trip on Saturday night, half the audience cheered in immediate recognition. Others had to be told by their kids or grandkids seated next to th... more info

L.A. Times - Pop & Hiss — When Rihanna joined Paul McCartney in a surprise appearance to sing “FourFiveSeconds” at Desert Trip on Saturday night, half the audience cheered in immediate recognition. Others had to be told by their kids or grandkids seated next to th... more info

L.A. Times - Entertainment — As if it wasn’t enough that Paul McCartney served up more than three dozen classic Beatles songs, solo hits and other material spanning his career during his turn onstage at Desert Trip, he also conducted a little unscientific demographic rese... more info

L.A. Times - Pop & Hiss — As if it wasn’t enough that Paul McCartney served up more than three dozen classic Beatles songs, solo hits and other material spanning his career during his turn onstage at Desert Trip, he also conducted a little unscientific demographic rese... more info

USA Today Music — She sang their hit 'FourFiveSeconds.'             more info

JamBase — Watch Rihanna and Neil Young guest with Paul McCartney and other highlights from Saturday at Weekend Two of Desert Trip. more info

Consequence of Sound — “We finally found someone under the age of 50." more info

Idolator — “We finally found someone under the age of 50,”  Paul McCartney joked. more info