I missed all these videos when I disappeared over the summer, but I'm really enjoying them now. You're really gifted, and it makes me so happy to see some great sheets from NSM being performed. Snowdin sounds so light and cheerful! Great job!
Ah, humbled. Thank you for your kind comments, promise that these will only get better in quality over time as I figure out my techniques and stuff ^^
You've also reminded me about the whole reading-NSM-scores thing. I'll always be open to trying out arrangements from any and all franchises! ^^ Opening up to new styles is awesome, and sometimes it rewards amazingly. The Fallen Down quick-learn braix suggested was my first and most decisive step into the Undertale OST, haha, and that was a fantastic experience <3
So yeah! Always open to try your scores if you'd like to hear them live

Not all scores will work out but I've only turned down one so far, whoop~
I guess I quick-learn all the songs I play. Usually when I learn a song, it takes from 1 to 2 hours. Albeit, they're not ready to perform like you, but it still is done pretty fast. I usually learn a section of the song, replay it through, learn the next and repeat. I then play it all the way through with the music then do it memorized.
Haha, being able to learn pieces in really short amounts of time is great!

But um, don't mind some sharing - the whole purpose for me doing quick-reads/learns was to train focus. Learning a score quick isn't really about doing it until you've got it right. For the Snowdin I spent 60 minutes on the learning, but half of that time was spent on tiny details like the mordents, accompaniment phrasing, same-note-finger-changing, pedalling and all. The rest of the time was spent doing what I call "familiarisation" - i.e. play slow, then build speed; this works for sections which I know are well within my technical reach and I just need to learn the basic stuff well for.
In essence, quick-learns are, to me, about efficiently pinpointing the parts that are to be refined and distinguishing them from those that only need familiarisation, drilling the potential shortfalls (shortcomings/pitfalls) as efficiently as possible, and settling as many rough edges as possible, all that within a short time. That needs immense focus, and that was the whole goal of doing these when I was drilling Classical stuff.
But y'know, VGM is different. You're going to have fun, and you're going to feel awesome. So if you've accomplished that in two hours you've done it right ^^