Google has made several solid ads for Android in the past but I don't think any of them have done as good a job of explaining the virtues of the mobile platform as the new one it released this week. Titled "Monotone," the ad shows a pianist playing the third movement of Beethoven's "Moonlight" Sonata on two different pianos:-One that features the usual 88 pitches you find on a keyboard and one that is tuned so that every key plays a middle C. RELATED:- Secret settings that make any Android phone feel twice as fast Obviously, Beethoven's classic sonata sounds a lot richer and fuller

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