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For music class Nicky had to make a new musical instrument. She made, with a little help of daddy, a musical bike. I fixed a tin can on it like we used to make every saturday before Whit Sunday, we called it "Luilak", Lazy-Bones. The children got out bed very early and woke up erveryone with a lot of noise. The rope you see on the picture contains a little white spirit and vibrates when you ride the bike. The frequency varies with the speed, so when you drive faster the tone goes up to a whining sharp terrible sound. Nicky's best friend Nikki danced on the schoolyard on the tones of the "Fiets-Gil-Gitaar". The class went crazy when they heard the bike and Nicky scored a 10 (an A).