While new recordings of the familiar Rachmaninov concertos and Beethoven symphonies continue to be released in high and predictable rotate, there has also been a swell in the amount of obscure repertoire that makes it to CD.
For Marbeck, this is the salvation of the industry. Even though he is keen on Baroque composers in general and choral music in particular, he draws on Bach's B minor Mass to make his point: "Every year, a number of new recordings of this and other well-known works appear," he explains. "Yet most people already have a CD they are satisfied with. There's only really a point in duplicating these pieces if there's something radically different in the interpretation."
As far as the Bach Mass is concerned, Marbeck is eager to hear Auckland Philharmonia Orchestra's performance of the work in October and sees a symbiotic relationship between the worlds of the concert hall and the CD.
"When the New Zealand Symphony Orchestra or Chamber Music New Zealand tour an artist, he or she might play to perhaps 10,000 people, which increases the demand for their CDs."
As for the so-called digital revolution, which has many downloading their music from iTunes and other online servers, Marbeck has no doubts that CDs offer a superior product.
"Classical music enthusiasts still prefer the actual CD over a computer file," he says. "Young people have become used to compressed sound and hearing so much through computer speakers. But once you've heard full spectrum stereo, the effect is like dawn coming up."
For just a moment we catch a taste of Whirimako Black's version of Miles Davis' Run the Voodoo Down with Kim Paterson's moody trumpet simmering in the ambience. It's a track from The Late Night Plays on Marbeck's own Ode label and it seems as if dawn has indeed broken on the sultriest of days.