masa (まさ) is a 27 year old producer who first started publishing in April 2011. He mainly uses GUMI and Hatsune Miku, but have also used IA, Kagamine Rin, and Sachiko. He makes illustrations for their own songs. His most popular song is 狐の嫁入り (Kitsune no Yomeiri), the remake of which has over 1,000,000 views on YouTube.
masa initially planned to release Dream Walker as his first album, but due to unforseen circumstances, has been cancelled. His new first album, ADULT, was released on March 5th, 2016.
Prior to the release of 鬼火 (Onibi), masa was known as ell and is known to have released two songs under that name: Joker and JosiKousei, which share a melody and serve as a precursor to the song "Gang Attack", released in April 2014.