There are two obvious key ingredients for a long-lasting pop career. One is to have a batch of classic songs identified with your name; the second is to retain the enthusiasm to sing them as if they still really matter.

Dionne Warwick's career has lasted for 43 years now: she started out in the same year as the Rolling Stones, and like them she has succeeded on both counts. The songs were provided for her, thanks to her association with that classic songwriting team of Burt Bacharach and Hal David, but the treatment has always been distinctively hers.

At 64, the one-time gospel singer from New Jersey is in remarkable form. She came on looking like a glamorous mum with a brave taste in glittering blouses, and at once embarked on the sort of non-stop medley of standards that most cabaret performers would save for an encore.

Raindrops Keep Falling on My Head, Arthur's Theme and What the World Needs Now followed each other at breakneck speed, with Warwick instantly putting her stamp on all of them with her gently understated style. Even when she reached the first of her own hits, Alfie, a song that is regularly wrecked by those who pile on the emotion, she showed how a thoughtful, almost conversational approach can bring life to the most well-worn standard.

Not that she lacks vocal power when she needs it. A piano-backed monologue about her early years was followed by a reminder of her gospel roots, with a joyful, stomping treatment of Born in Bethlehem ("one that Mahalia Jackson taught me") and then a non-stop run through many of her greatest hits.

Don't Make Me Over, from 1962, was followed by everything from Walk On By to Barry Gibb's Heartbreaker, and there were even surprises, including some soulful duets with her son, David Elliott. Reports that this is her last British tour are nonsense. When she's on this form, she'd be crazy to quit.

· At the Corn Exchange, Kings Lynn, tomorrow and Wednesday. Box office: 01553 764864. Then touring.