I feel like I've heard this before somewhere...

Butterfly on Your Right Shoulder- Kagamine Rin+Len

Love Laboratory
Download link: http://tinyurl.com/n8f335t


LUVORATORRRRRY! - GUMI & RIN

cross-posting from youtube to here!!

check out the full version (plus pv!!) here: https://youtu.be/Ct_YOfxc7Hw

2nd version (with a better quality) : https://soundcloud.com/len-kagamine-02/alternative-ver-rin-kagamine-tokyo-teddy-bear