Aida Stucki was a Swiss violinist and teacher born (in Cairo, Egypt) on February 19, 1921. She was a concert violinist who, like countless others, settled down to a teaching career, although she continued to perform as a soloist and chamber musician even as she taught many world class violinists. One of her teachers was Stefi Geyer, Bela Bartok’s beloved muse. Another was Carl Flesch. She began violin lessons at age 10, with Ernst Wolters, concertmaster of the Winterthur (Switzerland) Symphony Orchestra. Stucki made her public debut at age 13, playing Mozart’s third concerto, although I don’t know where it took place – I’m guessing either Winterthur or Zurich, Switzerland. Stucki’s concertizing career began in 1940. She was 19 years old. She began teaching at the Winterthur Conservatory in 1948. In 1959, she founded a string quartet with her violinist-husband, Giuseppe Piraccini. The two would often trade places, alternatively playing first or second violin. As far as I know, the first string quartet to regularly alternate first and second violin parts between violinists was the Jacobsohn String Quartet – it was founded in Chicago in (approximately) 1890. Stucki frequently partnered with pianist (and violinist) Clara Haskil to perform as a duo. Nevertheless, Haskil also performed with other violinists, including Isaac Stern, Joseph Szigeti, Henryk Szeryng, Eugene Ysaye, George Enesco, and Arthur Grumiaux. In 1983, Stucki fell and broke both of her wrists. She had to stop concertizing but continued teaching. She left a substantial discography which is easy to find on the internet. Among her many hundreds of students are Manrico Padovani, Anne Sophie Mutter, Noemi Schindler, and Matthias Enderle. From some recordings I've heard I concluded she must have played a pretty good violin but I was not able to find out what it was. Stucki died on June 9, 2011, at age 90.