found a link on a Chinese website where you can watch the full version of the second Hetalia musical! There are no English subtitles (it's a Chinese website after all), but if you really want to see it even without subtitles, I highly recommend it! Gameraider100
has already posted a journal with a link to the video, so I will provide a link to her journal:
Just follow the link in her journal. As always, I encourage people to buy the actual DVD, so they keep making more musicals!