There is perfect a capella and then there is beyond perfect a capella. Just back from over an hour of perfect jazz a capella from The Idea of North (albeit an Idea with Joy rather than Naomi, who is still on maternity leave). Although Naomi did appear on stage for a couple of numbers, although, minus her new "young apprentice").
Joy Hague was a great deputy alto, and should be thanked for bringing Sara Barielles' Gravity into the repertoire (and she still maintains the correct karmic balance of ex-Adelaideans in the group). The rest of the guys (Nick, Andrew, and Sally) were great, as always. I mean, this is their profession. This is what they do, all around the world.
The Australian government even gives them away to other countries as birthday presents!