High-rise Harmonielehre

A concert in a carpark, orchestra and audience gathered on level 8 of a 1980s brutalist hulk of concrete in Peckham, south-west London. It all sounds rather J G Ballard-esque, and indeed the way in to the venue is a grubby, litter-strewn entrance beside the PeckhamPlex cinema. There’s a bouncer in attendance and some heavy-duty…