Internet CO. Ltd, is a software company based in Osaka, Japan. It is best known for the music sequencer Singer Song Writer and Niconico Movie Maker for Nico Nico Douga, a video sharing website. It also develops singing synthesizers using the Vocaloid 4 engine developed by Yamaha Corporation.  Using the unique VOCALOID technology, you can create songs on your computer just by inputting lyrics and a melody. Use the Voice Banks, which are recordings of actual human voices, and the voice singing editing software VOCALOID Editor to include new voices in your music production and sound design environment, for finished productions or quick scratch recordings. There are more than 50 different kinds of VOCALOID Voice Banks filled with unique personalities.