Happy Birthday Hatsune Miku! It's August 31st and that means two things. One, August is almost over and we're moving into September. Two, it's Miku's birthday. (Also my brother's!)
On the chance you don't know Miku, she's a Vocaloid and essentially a virtual idol. Vocaloid is the name of a software used to create music using the manipulation of voice-banks. While Miku is not the first of her kind, she is the most well known.
For more information simply ask Google, or discover Vocaloid music and videos on YouTube!
Please enjoy celebrating with Miku and have a nice day!