The A-string has a core made from a single filament of high-tensile steel and is wound with chrome steel. The D-, G- and C-strings have a rope core. The D-string is wound with titanium and the G- and C-strings with tungsten. • A- and D-strings: soft and lively sound, enormously rich of modulation • G- and C-strings: distinctively warm and rounded sound • very quick response • exceptional tuning stability and immediate playability.