天樂 (Tengaku)

Background
The song was first uploaded on August 12th 2009; and is Yuuyu-P's second original Rin work. It's also one of his most notable songs with over 800,000 views (achieving Nico Hall of fame; with over 100,000 views) to date; other notables include "Shinkai Shoujo" or "Clover Club".

"Tengaku" was featured in various compilations, some include: On August 2009 it's featured in the compilation "DEBUTANTE IV", on December 2011, the compilation "Vocalo Vision", and also Exit Tunes' compilations such as "STARDOM 3" and "Vocalogemini". It's also one of the tracks for the game "Project Diva f" along with the module "Kagamine Rin Hougetsu" designed by Melou.

On Yuuyu-P's previous Rin original work; "Bird of Paradise", the song have similar points to the song "Tengaku" and it may or may not connected to each other (for it's produced by the same group; with Yuuyu-P as the composer, and tamajam as illustrator).