How Super Mario Land 2 Rearranges a Melody [Patron Request]

I'm so glad you pulled this B-list Mario game out from the past, it was one of my favorite games as a kid (even though my cartridge would delete my data every half year or so). Perhaps I need to be in the $10 tier to make this request, but I'm most curious about how you go about transcribing all of this music. It takes so much effort for me to be able to isolate just one line in my head, and I'm usually so slow I give up pretty quickly. Could you give some tips on getting better, or perhaps a video? =D