This is my fourth 가장 좋아하는 Honeyworks song as well as one of my 가장 좋아하는 Rin and Len duets so far. Classic. It's an old one with some poor tuning, but the song itself has really shaped the VOCALOID industry and its personification of the libraries.
This is one of my 가장 좋아하는 Regulus songs as well as one of my 가장 좋아하는 Megurine Luka songs. I remember listening to this just a few hours after it was released.
This is one of my 가장 좋아하는 songs 의해 CircusP, EmpathP, and that uses SF-A2 Miki. The English is really great for an advanced Japanese voice bank. Only a veteran tuner can pull that off. The art is kinda wonky though.
This is my 가장 좋아하는 song using Tohoku Zunko, one of my 가장 좋아하는 Maika songs, one of my 가장 좋아하는 Hatsune Miku songs, and one of my 가장 좋아하는 CircusP songs. This song is freaking awesome.
This is one of my 가장 좋아하는 CircusP songs as well as one of my 가장 좋아하는 SF-A2 Miki songs. It may not sound like it, but this song is extremely deep and well-written. Some very valid hypotheses can be found in the comments.