A moment in Better to Be, where the whole band freezes for about 20 seconds before Liam comes back in with soaring guitar, was this gig's biggest surprise.
The disco funk of Where's My Room, from a forthcoming joint album with Neil, was its most innovative, and Liam's theremin solo in Better Be Home Soon one of its most memorable.
Those old songs, of course, are the main reason a few thousand packed picnics to be here, but Neil – resplendent in orange jacket and better hair than your average 59-year-old – doesn't play them safe.
Private Universe turns into an eight-minute prog jam. Message to My Girl is reinvented as a Stax soul single. Don't Dream It's Over gets a whole new counterpoint keyboard part, the band improvising like only one that's spent a lifetime making music together can.