Aquila 55U Ukulele CONCERT Regular Tuning, Key of C - GCEA (alu wound C-string) on the one hand, to rediscover the sonorities familiar to the great 19th and 20th century masters; and guaranteeing, on the other, a stability of tuning higher even than that of the best gut and nylon strings. set / Concert Ukulele g' c' e' a' - Standard Tuning, Key of CC-string: Red SeriesStrings made of New NYLGUTString length: approx. 76 cmNylgut strings include promptness of attack, excellent timbre and a truly remarkable stability of intonation. The new synthetic materialNew Nylgut (synthetic gut) has the same acoustic properties as gut - but without its typical defects (high cost, limited duration and high instability under varying climatic). Nylgut has precisely these qualities: allowing one,