I'm happy to report that here in east-central US, I was able to listen to the program on the link that Ivor has provided. Thanks, Ivor!
It's a 30 minute interview conducted by Robert Winston, featuring commentary by music commentator Norman Lebrecht, conductor Ben Zander, and psychotherapist Dr. Emanuel Garcia.
The topic is very much related to this posting, as it speaks of the influence of life experience upon Mahler's music. I could tell immediately that Leonard Bernstein would have given his approval, when they began to speak of the appearance of Klezmer music in M1. I'll admit that M1, with its inverted Bruder Martin theme, does have a Yiddish or Jewish sound to it, but coming off Henry-Louis de La Grange, I remember La Grange's admonition that there is no concrete evidence that Mahler ever heard Klemzer music in his life.
The interview goes on with a good bit of very interesting information, such as the dismissal of M9's mimicking of mitrovalvular disfunction (heart flutter) and possible suicidal feelings by Mahler. Much is speculation, though at least it is speculation by persons with some expertise.
Of particular interest to those who enjoy information about mahler the man was the story (by Norman Lebrecht, I believe), of how many years ago, he met an old woman who, as a child, had attended a wedding where Mahler was present. She had told the interviewer that she could not remember much of the day as she had been sent away from the wedding for her bad behavior. When he asked her what was the bad behavior, she replied that she had been caught imitating Mahler's unique way of walking.
Of interest to our topic here, of the influence of whether more knowledge influences appreciation of Mahler's music, the speakers brought up the many annotations on Mahler's manuscripts, and the influence that the deaths of so many of his siblings had had upon Mahler's view of life, with his persistent awareness of inexorable death.
Very much worth listening to for its thought-provoking value, whether we choose to agree with all or some of the statements made.
--John H