Where once the wail of the siren pierced the night over a silent Clydebank, now it blends with an orchestra in remembrance. “Clydebank ‘41” will debut this weekend with a film to mark the 80th anniversary of the Clydebank Blitz on March 13 and 14, 1941. Thousands of Bankies died or were seriously injured. Tens of thousands of homes were destroyed. The government pretended it didn’t happen. The Royal Scottish National Orchestra (RSNO) proposed commissioning a special work and asked their principal horn player, Christopher Gough, in December to write it within weeks. “It was very daunting,” said Christopher. “The brief was ‘go away and write anything’.