Ernie Ball Earthwood phosphor bronze light acoustic guitar strings provide you with warm, balanced tones and comfortable playability. The phosphor bronze wrap wire is engineered to produce rich bass notes and crisp highs that respond dynamically to your playing style. You'll appreciate the clear, ringing sound of these light gauge strings, whether strumming chords or plucking melodies. With a fresh set of these long-lasting strings, your acoustic guitar will sing.