As I play catch up learning repertoire I should have paid attention to 40 years ago, I've got the Mozart theme and variations in front of me. It's the urtext version, which is not what I'm hearing when I listen to several recordings on YT. I've found the Schott, Segovia edition which is closest I've found to most of the recordings. I wonder if the variants from the urtext originated with Segovia? Can anyone point me to an original text recording?