The Right Tension For Your Guitar Strings – FuelRocks
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Are hard tension strings (around 85 lbs total tension) generally safe for classical guitars without truss rod? - Music: Practice & Theory Stack Exchange
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Amazon.com: Classical Guitar Strings, Alice 2 Pack AC130 Classic Nylon Guitar 6 Strings Normal Tension 28-43 Gauge with Anti-Rust Coating, Silver Plated Wrap : Musical Instruments