He wrote on a wide range of music subjects, but was particularly known for his studies on the life and works of the composers Giacomo Puccini and Alban Berg.

He went on to become the music critic for the British magazine Time and Tide (1949–1962) and the London Evening News (1957 to 1961).

[5] But a year later he became a naturalised British subject, and in 1944 married the composer and pianist Helen Lucas Pyke (1905–1954).

Carner also published two collections of essays and reviews, Of Men and Music (1944) and Major and Minor (1980).

[7] Mosco Carner died of a heart attack at the age of 80 while on vacation in Stratton, Cornwall.