There was an early CD release of St. Matthew Passion with Mengelberg and the Concertgebouw which, I believe, was recorded in the '30s. Might this be the one you're thinking of?
> From: David Lewis <[log in to unmask]>
>To: [log in to unmask]
>Sent: Thursday, November 29, 2012 12:45:36 PM
>Subject: Re: [ARSCLIST] Philips-Miller stereophony
>I didn't reply before as I wanted to fully remember my source, but I don't.
>For a time in the 1990s Gramphone published three or four numbers of a
>magazine which was like a paperback book called the "international record
>collectors -- something." In issue No. 2 there was a complete account of
>Philips-Miller system. It was used in 1939 to make a recording of Bach's
>St. Matthew Passion with a relatively reputable conductor; I have no idea
>who. The recording
>was issued, but only in mono. Only a couple of recordings made with system
>survive, and I think they are mono mixes all, but they are remarkable in
>their clarity and
>resolution, even in mono. And of course I am summarizing because I have
>never heard them, and the magazine was something I read off the rack at
>work, so I haven't
>seen the article in nearly 20 years.
>Uncle Dave Lewis
>On Thu, Nov 29, 2012 at 6:40 AM, Tom Fine <[log in to unmask]>wrote:
>> No one ever replied to this one. Anyone know any details? Guys in Europe??
>> Concertgebouw fans?
>> -- Tom Fine
>> ----- Original Message ----- From: "Tom Fine" <[log in to unmask]
>> To: <[log in to unmask]>
>> Sent: Thursday, November 08, 2012 10:02 AM
>> Subject: [ARSCLIST] Philips-Miller stereophony
>> According to old issues of the Philips Technical Journal, in the 1940s
>>> the company adapted at least one of their Philips-Miller film-inscriber
>>> recorders to make "binaural" 2-channel recordings. Have any of these been
>>> reissued on CD?
>>> -- Tom Fine