Amazon.com: D'Addario EXP16 Coated Phosphor Bronze Acoustic Guitar Strings, Light, 12-53 – Offers a Warm, Bright and Well-Balanced Acoustic Tone and 4x Longer Life - With NY Steel for Strength and Pitch
John Keal Music Company Inc. - D'Addario EXP Coated 80/20 Bronze Custom Light Gauge Acoustic Guitar Strings