John Martin, 47, a musician, has been formally accused of killing concert pianist Natalia Strelchenko, who was found dying of head wounds at a domestic residence in Newton Heath, Manchester, on Sunday.
Natalia was 38. She is survived by her son.
John Martin was her companion and manager. He is further accused of the attempted murder of a boy under the age of 17. He will appear at Manchester Manchester Court tomorrow.
The case has certain similarities with the Bonn murder last year of a Belgian concert pianist, Kate de Marcken.