The plumes of marijuana smoke floating across Hyde Park on this gloriously balmy summer evening are entirely apposite as Tom Petty sings, “But let me get to the point, let’s roll another joint” on ‘You Don’t Know How It Feels’. And, much like the weed’s relaxing effects, Tom Petty And The Heartbreakers offer a solid if somewhat laid back tour through the 40-year career that they’re currently celebrating.

They’re an unshowy band, for sure, electing instead to let the material do the talking and the crowd do the singing when the mood takes hold. Indeed, ‘Free Fallin’’ and ‘I Won’t Back Down’ become communal affairs with the latter delivered by the crowd with full gusto. Elsewhere, the mid-paced chug of ‘Learning To Fly’ chimes with the laid back vibes of the evening.

But if Petty and his band elicit feelings of respect from the sold out throng packing Hyde Park, then the love directed at Fleetwood Mac’s Stevie Nicks during her earlier set is both palpable and justified. Changing shawls more often than Theresa May switches policies, Nicks cuts a bewitching and beguiling figure whose fine and throaty voice belies her 69 years.

Diamond and pearls from an illustrious career are on frequent display. Digging deep, ‘Crying In The Night’ makes an appearance and a pumping ‘Edge Of Seventeen’ is ushered in by Waddy Wachtell’s extended guitar intro. But it’s those Fleetwood Mac gems that sparkle the most with ‘Gold Dust Woman’, ‘Dreams’ and ‘Rhiannon’ drawing the biggest cheers of her set.

Nicks later returns to the stage to join Tom Petty And The Heartbreakers for a spirited romp through ‘Stop Draggin’ My Heart Around’ and the mood changes from admiration to adoration once again. With nothing left to prove, Petty and Nicks revel in the simple joy of playing music and, just like those tokers, the crowd eagerly breathes it all in.