Utau (stylized and most often referred to as UTAU) is a Japanese singing synthesizer application created by Ameya/Ayame. This program is similar to the Vocaloid software, with the difference that it is freeware instead of being released under third party licensing.
Hello. I don't have any UTAU related artwork atm - I just wanted to tell you guys that you're awesome for using a 'Anti the Infinity Holic' inspired icon. c: