This is the link application that can search for videos of Hatsune Miku.
Also not good at Japanese, no problem.You can find the song in English.
And operation is very simple.
#You can look for new videos.
#You will find a hit song easily. (128 songs)
#You can look for funny videos.
#You can introduce to everyone using Twitter.
*In version 1.5, up 18 songs.
*This app is unofficial.
*In youtube, you can watch the video.