“I’m on cloud nine!” Dua Lipa said. “I’m having the best time!”

Ms. Lipa, an English songwriter, had just performed “Scared to Be Lonely,” her single with the electronic dance music producer Martin Garrix, on “The Tonight Show,” and she was still buzzing on the adrenaline during an interview over a cup of chamomile tea at a Rockefeller Center restaurant.

The talk-show performance was one more methodical step in the internet-accelerated career of Ms. Lipa, 21, who is releasing her debut album, “Dua Lipa,” on Friday. She has already tabulated hundreds of millions of online and radio plays for her singles “Hotter Than Hell,” “Blow Your Mind (Mwah)” and “Be the One,” while “Scared to Be Lonely” has garnered more than 250 million streams. On Saturday afternoon, Ms. Lipa is to perform in New York at Governors Ball on Randalls Island, starting a summer full of festival dates.

Martin Garrix & Dua Lipa – “Scared to Be Lonely”Credit…CreditVideo by The Tonight Show Starring Jimmy Fallon