CultureHorn Flashmob London05/26/2017May 26, 2017Sarah Willis flashmobbed London – with a little help from the London Symphony Ochestra and the Band of the Coldstream Guards. https://p.dw.com/p/2dWs2Image: DWAdvertisementHorn Flashmob LondonTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video