Martin ukulele strings provide an easy playing feel, excellent tuning stability and a clear, warm sound. High-strength fluorocarbon holds chords longer and improves harmonic output for a true, consistent sound. Experience the small but powerful sound of Martin Ukulele strings. Martin Soprano and Tenor ukulele strings are made from transparent fluorocarbon. Our baritone ukulele strings are made with clear fluorocarbon, aluminum wire, and silver-plated copper over nylon.