SOPP363: An unexpected early Christmas present thanks to you two

This question was sent by Leon and he writes: “Dear Vidas and Ausra: I had a mild case of the flu from Saturday through Tuesday. Seemed like a cold for the first two days, but "the grippe" was there when I awoke Monday. Thanks to the flu shot in September all was able to be treated with symptomatic meds, and no fever. So when I got back to practice yesterday, I decided to retry the OrgelBuchlein. I was able to do No. 1 at half speed with only two mistakes. And rediscovered that I had done the 15-step method on them all from November 2017 to March of this year. I'd completely forgotten that, but the penciled in evidence is there on the music - computer-printer copies from IMSLP. So, an unexpected early Christmas present thanks to you two. Merry Christmas! Leon”