The second novel in Aaronovitch's Peter Grant series takes the police constable cum apprentice magician into Soho and the world of jazz, where somebody seems to feed of the musician's vibes, while a black magician is expanding his territority.
Links (outside Open Library)
2 editions First published in 2011
2011, Del ReyMoon over Soho
2011, GollanczMoon over Soho
Paperback in English