In 2003, when Lynn Harrell last played Elgar's Cello Concerto with the NZ Symphony Orchestra, he did not realise that his filmed performance would be interwoven into a documentary by Auckland film-maker Annie Goldson.
He admits he was eventually "blown away" by the film, Elgar's Enigma, with its premise that the 1917 Concerto may have been inspired by the 1916 death, on the Western Front, of a New Zealander who happened to be the son of the composer's former fiancee.
"We're told in music school to read composers' letters in order to understand their music better," he says. "With film, the power of the visual gives a much more vivid picture of it all."
Tonight, in the Town Hall, this autumnal work is the centrepiece of the NZSO's For the Fallen concert, but for Harrell, the impact of this music stretches far beyond Flanders and Gallipoli.
"In the DNA of the piece itself there's this sense of irretrievable loss," he says. "You might relate this to a time of your own life that you remember and are not able to revisit. After all, you can't raise your dead father and tell you how much you love him."