The sheet music is inaccurate, but it's close. The first bar only appears to have 3 crotchets/quarter notes whereas Snow Halation is in 4/4 time. It would be correct if a crotchet rest were added before the two first quavers in the top stave's first measure.
The bottom stave isn't clear enough to properly see, and nor are any of the other systems, but aside from that the top stave seems to be pretty much accurate. Given that SH is in A major, it's even in the correct key, so props to the artist.