"Realization of the Art aims of the modern quartet calls for endless
rehearsal. Few people realize the hard work and concentrated effort
entailed. And there are always new problems to solve. After preparing a
new score in advance, we meet and establish its general idea, its broad
outlines in actual playing. And then, gradually, we fill in the details.
Ordinarily we rehearse three hours a day, less during the concert
season, of course; but always enough to keep absolutely in trim. And we
vary our practice programs in order to keep mentally fresh as well as
technically fit.