The musician who wrote the famous techno tune that appears in the movie “Ferris Bueller’s Day Off” got filthy rich by investing the cash he made from it into lucrative companies, according to a report Friday. Dieter Meier’s song “Oh Yeah” — which features the catch phrase in a quirky slow-mo baritone — made a $175 million fortune by pouring the song money into train and currency companies, he told the Wall Street Journal. The tune was first used in an iconic scene in which Ferris, played by Matthew Broderick, opens a garage and finds his pal’s dad’s shiny new...