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A Landline Phone Can Help Tune Instruments

You might have an old landline phone lying around somewhere. The one that requires you to spin the dial around with the tip of your finger. You might even be a fan of music, and if so, then this trick is definitely for you. We all know that instruments can make music, but not everyone has an instrument tuner available, which is where a landline phone could come in handy.

There is almost always a dial-up tone. This is a perfect F note, and you can use it for tuning your guitar or practically any other instrument that needs it.