You mentioned that you’re a “complete newcomer.” All the CDs that come with method and anthology books are A=440.
If you’re addressing me, I’m referring to professional performance CDs that one listens to. Not ‘music minus one’ play-along CDs.
Mainly French & English baroque repertoire on an A403 Bressan, and an A415 DeBey. Recorder enthusiast since 1971. Early Music program at York University, French baroque instruction at Royal Conservatory in Toronto.