He is supposed to stay at center-left but through some pressings I have heard similar panning “movement,” which I suspect is due to warps in the groove or imperfections in the master tape stereo transfer back in the day. Might help to listen only in mono.
Violin Moves All Over the Sound Stage
I have a beautiful digital recording of Isaac Stern and the NY Philharmonic playing the Beethoven Violin Concerto in D Major. The solo violin sounds sometimes in the center, sometimes from the left speaker and sometimes like two different violins in two different locations. What is wrong?