Christian Tetzlaff has proven Bartókian credentials: his account of the sonatas with Leif Ove Andsnes is a reference recording and his gaunt, uncompromising reading of the Second Violin Concerto from 1990 in collaboration with arch-modernist Michael Gielen made quite an impression. His new recording is an even more detailed forensic examination but with the expressive intensity ramped up, aided and abetted by state-of-the-art engineering that puts the listener in the front stalls so you hear every strand of rosined hair on strings.