If you love the sound of our phosphor bronze guitar strings but want something a bit more "polite and refined", the Silk and Bronze Acoustic Guitar strings are your answer.  They are wound with an 8% copper-tin phosphor bronze cover over a round core, with synthetic rayon running the length. This adds a bit of warmth to the tone, with a quicker decay. The round core is much more flexible under the fingers, allowing you to play longer, while enjoying the sweet sounds of your acoustic guitar.