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Sine Wave A 440 Hz Concert Pitch for Ten Hours
Stop your brain from overthinking. You don't need an app. Ten hour Sine wave with no overtones which is called pure as it is only the fundamental frequency.
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In a popular suburb of Dakar, workers on the construction site of a futuristic tower, without pay for months, decide to leave the country by the ocean for a better future. Among them is Souleiman, the lover of Ada, promised to another.