I played around my Sony Soundforge and I created a little remix from two of Utada Hikaru’s songs, which is almost the same, except that “Passion” is sung in Japanese, while “Sanctuary” is sung in English. Both songs are in this popular game called “Kingdom Hearts II“. The Japanese version would have the Japanese song, while the international English version would naturally have the English song.
I combine them, each from different segments, so that the final song would have a combination of Japanese and English vocals. Its not perfect, the sources have different volumes. As hard as i tried (since i am no expert in this) to make it sound naturally, you will hear a slight discrepency of volume (especially the bass level) as the song progresses and switches back and forth between the two songs.
You can listen to the song by clicking here. I hope you like it.
thecosmopolitanwanderer.blog 
wow that was cool!
This is the COOLEST song combination ever! I listen to it on my iPod more than Sanctuary OR Passion. SOOOO AMAAAAAZZIIINNG! 😀 Trust me, the transitions are seamless! I never noticed the bass discrepancy, by the way. I just love this version. A TON. Great job!! 😉