In an unexpected move, Lewis Capaldi has surprised shoppers with a once-in-a-lifetime experience, performing an impromptu gig on the rooftop of an Aldi.The performance saw his brand-new single played for the first time outside of his arena tour, with the store rebranded as “Cap-Aldi” in tribute.The secret set comes as Capaldi makes his triumphant return to live music, with his sold-out UK tour already underway.