Dream combo, yes, close to it. Minor rants:
28/2 AI: not so nice wide open, due to bad peripheral bokeh and sharpness. Maybe linked my sample's CRC being out of tune ? I did not test that hypothesis, as I do not know how to do it. My copy's condition looks very good otherwise; it did not apparently experience rough handling.
58/1.2 AIS: loss of contrast with backlighting and, more generally, has some issues with flare. Otherwise it is a high contrast lens, and astonishingly sharp wide open.
105/1.8 AIS: near-perfect... especially good with backlighting; great for stage shots. My copy was cleaned but not sufficiently re-greased, so there is some "dry friction" feel when focussing; I'll have to fix that.
For this particular subject (organs):
My primary intent was stage shots; for that purpose (as well as for organs) I should have taken the Voigtländer 58/1.4, but with night shots in mind after the concert, I preferred to try out the Noct.
Also, the Zeiss 135/2 is terrific for stage shots (not to mention the Nikkor 70-200), but I wanted to travel light, and the 105/1.8 is, once again, an excellent performer.
For organs, I'd take the Zeiss 35/2 or 25/2 rather than the 28/2 because of their excellent handling of backlight. Also the PC 24/3.5 fills the bill.