Daniel Ho sells the music/tabs himself on his site:
http://www.danielho.com/DHC/OrderDownloads_sheet_music_uke.html
You can order a paper copy to be sent to you, or (using the big green button at the top) purchase the PDF and print it yourself.
He organized a virtual ukulele concert last year in which people from all over the globe learned the piece, recorded a video at the specified tempo, and he compiled segments into a music video:
https://www.youtube.com/watch?v=a7xcHl3MSlk
The virtual concert project necessitated creating tabs for different levels of playing ability. There were also instructional videos for all 6 parts.
Part 1
https://www.youtube.com/watch?v=f5WcBiSPEc4
Part 2
https://www.youtube.com/watch?v=D38CtWrmEEY
I was unable to find the original tutorial for part 3, but this is one of the submissions for part 3.
Part 3
https://www.youtube.com/watch?v=OCaxhc59pfM
Part 4
https://www.youtube.com/watch?v=gX0CUWD7M18
Part 5
https://www.youtube.com/watch?v=W6iSC7ZCNCE
Part 6
https://www.youtube.com/watch?v=rGbQbpxJHqg
This might be more than you are looking for, but I thought it was a wonderful event, and I'm delighted that it happened. I recently purchased the tab and I bookmarked these tutorials because I find it helpful to hear and see an example of what I'm trying to understand in a tab.