Magma MEXICAN HARP JAROCHA 37 Special Strings Medium Tension. Tunning: SOL - G (AMEJ300)Magma Harp strings are specially designed for professional harpists. The Nylon Crystal Premium trebles and the basses of unique wounded design are perfectly balanced allowing brilliant sound, great volume and durability. This set can be used for harps with 36 strings or 37 strings. Tunning SOL G AME101 Special Nylon . 028 0,71mm 10 Cristal 2 Red 1 Blue AME102 Special Nylon . 032 0,81mm 3 Cristal 1 Blue AME103 Special Nylon . 028 0,71mm 3 Cristal 1 Red