P.S. Mimmo Peruffo's twisting gut strings and myself - in the background - holding their ends. This is how musical strings were
made till recently, perhaps even not 30 years ago though the pure-metal strings were introduced around the time of the 1st WW because all gut went to the military for surgeries.
A picture taken in February 2009 in Aquila Corde factory. It is in this room the first violoncello da spalla strings suitable for concerts and recordings were made.