Sometimes music is a more effective transporter than the London Underground. This was certainly the case this Tuesday, when closures on the Piccadilly line resulted in me cycling at breakneck speed half-way across London to hear the Danish String Quartet playing in what I imagined to be a regular, run-of-the-mill, wear-what-you-like-as-long-as-it’s-corduroy concert at the Cadogan Hall.