“Jeremy Eichler, a classical music writer for The New York Times, will be the Globe’s new classical music critic. Joining the staff on Monday to cover pop music will be Sarah Rodman. She comes from the Boston Herald, where for the last six years she was a staff columnist covering pop music and entertainment. The Globe’s new theater critic will be staff writer Louise Kennedy. She has worked as assistant book editor, assistant Living/Arts editor, assistant magazine editor, food editor, home editor, and, since 2001, arts reporter.”