Christiansen further suggests that, given the changes of style over the past 50 years, Ferrier might have been less successful in the 21st century world: "We dislike low-lying voices, for one thing—contraltos now sound freakish and headmistressy, and even the majority of mezzo-sopranos should more accurately be categorised as almost-sopranos".
Christiansen suxire tamén que, dados os cambios de estilo nos últimos 50 anos, Ferrier tería menos éxito no mundo do século XX: "Non nos gustan as voces baixas, por unha cousa as contraltos agora soan extravagantes, e mesmo a maioría das mezzosopranos poden ser máis precisamente clasificadas case como sopranos".