Set (36 strings) / Concert Zither “Bergfee Blue” (Steel/Nylon) Complete set incl. fretboard strings Vienna Tuning Fretboard (a’ d’ g’ g c), Accompaniment (As0 – Gis12), Bass (Es13 – Gis24), Contra (C25 – G30) Scale length: 41,5 cm With a thin steel core; made on pure nylon silk CONCERT ZITHER Bergfee Nylon Blue are perfectly suitable for the electromagnetic sound transmission. A thin steel core, high-quality nylon silk and a silver plated copper wire give this string its exceptional sound. The string is stable in tuning and delivers a brilliant sound.