Meiko is a Japanese vocal synthesizer software developed by Crypton Future Media. It was released in 2004 and is part of the Vocaloid series, which allows users to create singing by inputting lyrics and melody. Meiko's voice is characterized by its warm and mature tone, making it suitable for various music genres. In addition to the software, Meiko has become a virtual idol with a dedicated fanbase. She is often depicted as a young woman with short brown hair and a red and black outfit. Meiko has appeared in numerous songs, albums, and even video games, contributing to the popularity of the Vocaloid phenomenon.