Joyce and her band start their set with the title track of Just a Little Bit Crazy (one of the best albums of the past year) playing with an exuberance that few bands reach by encore time. After a few chords on her guitar she's joined by bassist/ producer Rodolfo Stroeter, drummer Tutty Moreno and Teco Cardoso (flute, alto flute and soprano saxophone) who adds a second voice to Joyce's gorgeous lead vocals.

The quartet blasts its way through more than a dozen numbers: Joyce originals such as Galope, London Samba and Forças D'Alma (from Gafieira Moderna) plus a classic bossa nova - Voce e Eu - and upbeat versions of older numbers such as Edmundo and Beija-Me. Stretch your neck and you can glimpse bowler-hatted JazzCotech dancer Kola Abidogun, shimmying joyfully in a far corner. Near the end of her set, Joyce invites Abidogun up on stage to "sit in". He moves quickly to the double feel, responding to every gradation of rhythm, dancing expressively to the flute/voice partnership of Cardoso and Joyce.

The audience is stunned - do we really deserve something this good? A beautiful blonde woman raises her arms to the stage in a "we are not worthy" gesture of devotion. But she's waving a cigarette a few inches from Joyce's face. "If you love me please don't smoke," says Joyce. The woman stubs out her fag. "Now I love you, too," says the Brazilian star - she's in complete control.

Joyce sets a new standard for singer-songwriter-performers. Her music has a fleet, spacious, intoxicating quality you associate with the best of Brazil. Cardoso, hugely popular with the crowd, could become a new Harold McNair - a jazz flautist who can speak to a wider audience. But Joyce is the boss.