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I got a question from a friend, who tuned his guitar using a tuner but it could not sound well! He sent me the video of his piece and I asked him to play each string and I knew the sound was from the loose tuning peg like in this tutorial. So to fix it you do as done here. Here is my youtube channel link https://www.youtube.com/channel/UCpNV7MD-hd2gGqJqZCJpLhg
► Watch on DTube
► Watch Source (IPFS)