A performance of The Hague percussion trio XTRO is a feast for the eyes. The stage is filled with an arsenal of everyday objects such as bottles, glasses, flowerpots, high-heeled shoes, coconuts and buckets of water. John Cage, the American avantgarde composer, famously stated that music isn’t limited to instruments like the violin or piano, but that any sound – from the squeak of a chair to the rumble of a passing truck – can be part of a composition. This idea is the jumping off point for Flow: a programme in which these three young percussionists string together seven compositions to a poetic stream of sounds derived from everyday objects. To anyone who is willing to see and hear, they demonstrate that music knows no boundaries.