APPEALING TONE: THE BEST-SOUNDING STEEL CORE STRING AVAILABLE. UNBEATABLE RELISIENCE: ENGINEERED FOR UNPARALLELED LONGEVITY AND DURABILITY. UNBEATABLE RELISIENCE: ENGINEERED FOR UNPARALLELED LONGEVITY AND DURABILITY. PROFESSIONAL PLAYABILITY: BALANCED TENSION FOR A COMFORTABLE FEEL. UNIVERSAL APPLICATION: CLASSICAL, FIDDLE, JAZZ, AND ALTERNATIVE STYLES. INDUSTRY STANDARD DESIGN: PRELUDE IS THE WORLD'S BEST-SELLING STEEL CORE STRING.