Everyone gets a little obsessed with famous musicians now and then, but things get really weird when the famous musician is actually just a piece of software. Hatsune Miku is a rising star in Japan and abroad, singing catchy J-pop that matches her blue-green hair. She’s also a virtual avatar created by Crypton Media using Yamaha’s Vocaloid voice synthesizer. That hasn’t stopped her from amassing a legion of fans who really love her work. I mean really love it. Check out the crowd frantically waving glow-sticks and singing along with Hatsune Miku as she appears via a ‘3D hologram’ on stage in the videos below. Thanks to Klas Klazon for pointing us to these awesome HD clips of her work. The performances are from the recently released Blu-Ray/DVD collection of Hatsune Miku’s latest sold out concert in Japan: 39 Giving Day. This girl, er…program?, can really rock.