Sometimes it pays to sit in the cheap seats. From high in the Rausing Circle of the Royal Albert Hall, Prom 19 was an ultimately rousing celebration of David Bowie’s life and work. Under the direction of André de Ridder, Stargaze, their collective swelled by an eclectic line-up of guest singers, performers and composers, delivered arrangements of Bowie classics and the odd surprise track full of the wit, (re)invention and unpredictability associated with the artist himself.