Community music projects always spread harmony... don't they?
When players in Stockwell Park Orchestra fear they may be getting out of touch with the community, they invite children from two nearby schools to join them for a season.
Supercilious, rich Oakdean College pupils have never mixed with the rough Sunbridge Academy kids, and when things go missing and rumours spread, the situation threatens to turn ugly. DCI Noel Osmar has to tread carefully: after all, he's off duty. Step forward, Carl the trombonist.
Can music heal social rifts? Who has been stealing and why? And will the orchestra's newly-composed fanfare turn out to be fantastic... or farcical?