Prim Nyckelharpa strings Chrome steel - A1 (Medium)The Swedish nyckelharpa has experienced a great renaissance in recent decades. It has its roots in the county of Uppland, north of Stockholm, where Prim Strings are manufactured. Prim has been making nyckelharpa strings since the 1980s and is now the only manufacturer in the world. Strings: C4 G3 C2 A1 Tuning tones: c g c' a' Chrome steel wound Single strings in soft and medium. Set in medium