Up to the middle of the 20th century, the only available strings for guitar were plain gut for Trebles and wound on silk core for Basses. Their acoustical performance was quite different from that of modern synthetic strings. The salient characteristics were a marked tonal presence, and brightness typical of gut strings (certainly superior to plain nylon and in some respects closer to fluocarbon strings) while the silvered copper would basses, on the other hand, possessed an exquisitely vocal quality, i.e. with less sustain and not as bright as modern wound on nylon strings, and with a sound more centered on the fundamental harmonics. Available in only one degree of tension, this set recreates the exact typical historical setting of the period of Llobet and Tàrrega, by using oiled gut strings for Trebles and silk-core wound basses, as stated by Pujol in his “Escuela Razonada de la Guitarra” of 1934.