Music has always been integral to the society. The 2007 festival paints the town red with its opening latenight horror bill (tonight, Curzon Soho, 11pm), featuring the Death By Dawn horror award and a suitably Gothic DJ set. On Monday (ICA, 8pm), Halloween teams up with Birmingham's 7 Inch Cinema to present live improvised soundtracks from experimental duo Black Galaxy (Simon Mabbutt and Nicholas Bullen, who co-founded the legendary Napalm Death in his early teens).