The Lazelle twins laugh at a shared joke.

Rarely has the theme of dialogue been exploited as effectively as in the new show at Luton's Valentina Morose Gallery. The exhibition centres around a video produced by insomniac conjoined twins, Grahamina and Garetha Winnipeg. Their fourteen-hour disagreement over the album 'Tusk' by Fleetwood Mac is a riveting insight into the nature of identity and confusion.

The disagreement has since been heightened by the recent grant of Arts Council funding to Grahamina (left head - the one that looks like Tracey Emin) to embark on a journey to the arctic to interview snow leopards. Garetha remarked to Art Review this month: 'I wish her all the best in her adventure'.