One of the 20th century's greatest violinists, Leonid Kogan was less widely known than his somewhat older contemporary David Oistrakh, but no less a first-tier artist. More concentrated in tonal focus and with a quicker vibrato than Oistrakh and others of the Russian school, Kogan was avowedly a man of his time. His espousal of the four-octave scale for exercises assured the infallibility of his technique by strengthening his fingering hand in the upper positions. Although he died at age 58, he had amassed a discography that remains as a commanding legacy. Although his were no...