An international breakthrough came in 1962 when Leonard Bernstein recorded the Fifth Symphony with the New York Philharmonic Orchestra for CBS. The recording helped Nielsen's music to achieve appreciation beyond his home country and is considered one of the finest recorded accounts of the symphony. Nielsen's centenary in 1965 was widely celebrated, both in terms of performances and publications, and Bernstein was awarded the Sonning Prize for his recording of the Third Symphony. In 1988 Nielsen's diaries and his letters to Anne Marie were published, and these, together with a 1991 biography by Jørgen Jensen using this new material, led to a revised objective assessment of the composer's personality. Writing in "The New York Times" on the occasion of Nielsen's 125th anniversary in 1990, the music critic Andrew Pincus recalled that 25 years earlier Bernstein had believed the world was ready to accept the Dane as the equal of Jean Sibelius, speaking of "his rough charm, his swing, his drive, his rhythmic surprises, his strange power of harmonic and tonal relationships – and especially his constant unpredictability" (which Pincus believed was still a challenge for audiences). Biographies and studies in English in the 1990s helped to establish Nielsen's status worldwide, to the point at which his music has become a regular feature of concert programming in Western countries.