Weekend readers' pictures: rhythm

'Walking in step at Tate Modern' Photograph: Richard Thomson

'Percussionist Hugh Wilkinson plays in a Brooklyn tunnel. The acoustics were magnificent' Photograph: Gavin Stenhouse

'Dawn on Thursley Common, Surrey: a rhythmic honking and beating of wings alerted me that the canada geese were taking off' Photograph: Dave Roberts

'The motion of the red scarves, waved by dancing women in a park in Chengdu, was a lovely sight' Photograph: Jacob Strauss

'The joy of summer. Different ways to spend a day on the beach: going for a swim, walking, jogging, sunbathing, reading. Guarujá beach, Sao Paulo, Brazil' Photograph: Fatima Felisberti

'My 2 year old's improvised rhythm making in a woodland clearing, lit by a shaft of sun through the trees' Photograph: Julie Jackson

'Rhythmical faling down' Photograph: Marta Sordyl

'A couple of guys picked up the nearest objects to hand to jam together at a small impromptu party in Senegal'

We’re looking for an image for the cover of the Guardian’s forthcoming guide to photography that captures the spirit of the medium. We want more than just a beautiful image. Ask yourself what makes an image extraordinary? Is it technique (shutter speed, depth of field, multiple exposures, etc)? Is it the ‘decisive moment’ when light, colour and composition come together for a fleeting moment? We are not looking for manipulated images, but something that conveys the power of photography. The winner will receive £250 worth of photography vouchers. Go to Guardian Camera club for more details. Photograph: Lisa Chillingworth