Searching For Madge - "symphonic" part

[lazy poker]

here's one that i've been thinking about every now and then for ages, and it came up again as i've just been browsing through all the older threads once more (and if it has been discussed here before, it must have escaped me):

that "orchestral" passage in "searching" (starting at 5:25 up to 6:10) still keeps me wondering. has anybody got a clue if this is an original part (recorded especially for the occasion)? or is it an excerpt from some classical work and - if so - where is it from? and who recorded it (probably not the mac themselves)?

if there's someone in the know about this, i'd be grateful if he or she would share any info and knowledge on this matter . . .