Chorda - Authentic strings for baroque instruments Chorda E-, A-, and D-strings are plain gut strings, the G-string is wound. Authentic strings for baroque instruments Typical sound for baroque instruments Very low string tension, comfortable left hand feeling Designed for 440 Hz tuning For 415 Hz tuning, please use "strong" gauge. Altering the gauge by 1/4 PM changes the tension by 3%. The medium set contains the following strings: E-plain gut 11 1/2 A-plain gut 14 1/2 D-plain gut 19 1/2 G-silver-plated copper wire unpolished 16 G-plain copper: available in three gauges in steps of 1/2 PM and it has a darker sound than the standard G-string. Chorda strings are manufactured in three gauges in steps of 1/4 PM. Chorda E-, A- and D-strings without knot. G-strings with knot. Chorda strings are available in 4/4.