Tried it on 2 different laptops, different sound card and with a DAC. Also with 2 different pairs of headphones. Solti, Bertini, Boulez, Jarvi to name but a few have a louder organ, I need to check the rest of my collection (it is one of my favourite Mahler symphonies, if not my favourite, so I collect them compulsively). Ok maybe I was overreacting: the organ is audible but slightly so when compared to other recordings. Now, this is what I meant... But I have other issues on this single track: very annoying audience noise, there is a VERY annoying cough at 17 seconds, followed by more coughing at 22 and 24 seconds. Now, this is one of the most sublime, crucial moments of the symphony the chorus singing pianissimo in what is supposed to be utter silence and mystery. We have record labels like BR Klassik removing every single audience and stage noise from live recordings (i.e. the ones with Jansons). But DG decides not to edit them out? If you have followed other live DG released from the last few months you will notice that the coughing is really bad on their recordings, something that was not the case a few years ago with the same label. I am really wondering what on earth is going on.
Anyway, organ aside AND recorded sound aside (apart from the audience noise, it is rather unfocused and I've heard the lossless CD quality version on Tidal), the performance lacks momentum in the closing pages, at 6 mins it seems to drag and drag on... But we shall wait and see, perhaps the rest of the performance is OK.