Instrumental is a group known for performing cover versions of electronic songs using classical instruments. The band consists of Everton Nelson on violin and flute, Catherine Browning and Brian Wright on violin, Sally Ward on viola, Andy Nice on cello and Andy Waterworth on bass. You may also be looking for the Spanish duo Instrümental. But most likely it appear here due to incorrectly tagged tracks. If so, do last.fm and yourself a favour.