Eos Chater (sometimes credited as Eos) is the second violinist of the all-female classical crossover string quartet Bond.
Chater has an honours degree from the Royal College of Music in London and is from Cardiff, capital of Wales.
Before Bond, her work included writing string arrangements and playing with many pop groups including The Divine Comedy, Cocteau Twins, Julian Cope, Gabrielle and Mark Knopfler.
Her brother-in-law is the Welsh tenor Wynne Evans, best known for playing the role of Gio Compario in the Go Compare advertisements on British television.
Chater worked as Benedict Cumberbatch's violin coach for "A Scandal in Belgravia", an episode of the BBC television series Sherlock. Although Chater's playing is on the actual soundtrack, Cumberbatch was required to appear to be an expert violinist. To achieve this, Chater was positioned on set so that she could synchronise her playing with his.