Mum and Mrs Page have rather rashly agreed to play music together on their recorders, but they soon find that they’re not as good as they once were. Cue a cacophony of awful squeaks and honks! Biff, Wilf and Wilma each try to help their nervous mum practice. But, with neither Mum nor Mrs Page showing any sign of improvement, the children set about trying to find excuses to get them out of the big performance later that day. Will the recorder duet go ahead, and what will everybody think when they discover the two mums are truly bad at playing?