sCORDAtura is an Italian concept that implies the tuning of strings in different combinations through which the instrument receives a special sound, rich in colours and resonant in certain tones. CORDA, means "string" and comes from the Latin word CHORDA, which according to Aegidius of Zamora, a theorist from the 13th century, comes from CORS, meaning "heart". The action of the string on the instrument symbolizes the beating or the pulse of the CORS, being the motor that gives it life. Originally from Alicante, the viola da gambist and cellist, Fernando Marín has specialized in bowed instruments of the Renaissance and Baroque periods, historical interpretation and chamber music. He studied at the Conservatory of Oviedo, the International School of Music and Fine Arts in Prague, the Conservatory of Music in Cologne and at the Royal Conservatory of Brussels. Quartz released his first solo CD, eVIOLution, which traces the origins of the viola da gamba. He has also written articles on musical rhetoric and gut strings, which have been published by Nassarre, a journal for musicology, and an article on ornamentation and improvisation for the magazine Quodlibet. As a result of his research he has invented his own historical gut strings, which he has patented.