I found a couple of pages that all suggest classical recordings range from slightly to extremely spliced:
I wasn't sure how seriously to take these sources though, since I have no way of knowing if they're really accurate representations of industry standard.
Are there any reliable sources discussing modern professionals' editing practices? Are recordings usually one continuous take? A doctored take? Several takes?
When I say modern professionals, I'm talking about people that are easily world class (Marc-Andre Hamelin, Yo-Yo Ma, Martha Argerich, Joshua Bell, take your pick), and I mostly prefer answers about solo or small ensemble works, but of course I'm curious about huge philharmonics too.