I'm the operator with my pocket calculator

I am adding and subtracting

I'm controlling and composing

I'm the operator with my pocket calculator

I'm the operator with my pocket calculator

I am adding and subtracting

I'm controlling and composing

By pressing down a special key, it plays a little melody

By pressing down a special key, it plays a little melody

I'm the operator with my pocket calculator

I'm the operator with my pocket calculator

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