Every Paul McCartney concert is an experience unto itself, but fans who attended his gig at London’s O2 Arena on Saturday night were treated to two big surprises. For one, the former Beatle began his set with the live debut of “Temporary Secretary”, the goofy, synth-laden cult favorite from McCartney II. Later, he brought out former Nirvana bandmate Dave Grohl to join him in singing “I Saw Her Standing There”. Watch fan-shot clips of both performances below.

“Temporary Secretary”:



“I Saw Her Standing There” w/ Dave Grohl:

McCartney will return to the O2 Arena for another gig this evening. In June, he’ll make his way across the Atlantic for a series of US dates, including headlining performances at the Firefly Music Festival and Lollapalooza.

Paul McCartney 2015 Tour Dates:

05/24 – London, UK @ O2 Arena

05/27 – Birmingham, UK @ Barclaycard Arena

05/28 – Liverpool, UK @ Echo Arena

06/05 – Marseille, FR @ Nouveau Stade Vélodrome

06/07 – Amsterdam, NL @ Ziggo Dome

06/08 – Amsterdam, NL @ Ziggo Dome

06/11 – Paris, FR @ Stade de France

06/19 – Dover, DE @ Firefly Music Festival

06/21 – Philadelphia, PA @ Wells Fargo Center

06/23 – Charlottesville, VA @ John Paul Jones Arena

06/25 – Columbia, SC @ Colonial Life Arena

07/04 – Roskilde, DK @ Roskilde Festival

07/07 – Oslo, NO @ Telenor Arena

07/09 – Stockholm, SE @ Tele2 Arena

07/31 – Chicago, IL @ Lollapalooza