THE Circle’s Chrissie Swan came to the rescue of Fox FM yesterday, stepping in as a last-minute replacement for an ailing Fifi Box. Box, who is suffering from pharyngitis, started the show, getting some vocal tips from Kate Ceberano. But Ceberano insisted Box was too ill to continue and took her home, leaving her new on-air partner Jules Lund to fly solo. But he wasn’t alone for long, calling on friend Swan, reports the Herald Sun.