Oh man, you can't imagine how much I love music (and Minecraft music). I miss your type of channel (nowadays there's almost only posers and girls who pretend to play just to get views and likes). You are what the internet is missing: skill, passion, and love for the music.
Yeah the harmonics with the fast change to the A at 0:58 was pretty rough haha! Practice slow while gradually speeding things up and you should be good man!