Myra —, London-born classical pianist who became a DBE in 1941 (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
hess
(Other definitions for hess that I've seen before include "Cite as evidence" , "Rudolf ..., Nazi leader imprisoned at Spandau" , "Famous pianist" , "leading Nazi" , "Pianist Myra, Nazi Rudolf ---" .)