The second Bach. He is one of the founders of Malice Mizer and started Moi dix Mois after its hiatus.
Not only a musician, Mana-sama is also a designer. Moi meme Moitie is widely popular for elegant gothic lolita and elgant gothic aristocrat or EGL and EGA terms Mana-sama himself coined.
He is actually highly respected in Japan even though he is known for crossdressing. He even produces other artists under his label Midi:Nette. Schwarz Stein was the first, but certainly not the last.
He is now producing for Kanon Wakeshima, an eighteen year old celloist signed under Sony for her vocal talent. He writes all her music including her debute single, Still Doll.
Mana-sama is known for his mysterious demure. He doesn't speak in public aside from a few rare occasions preferring that "his music speak for him." He doesn't smile either.
Mana-sama has always been slightly non-conforming. In senior high he cut his hair into a mowhawk and died it green. His father was the band director at the time also showing that even young, Mana-sama was emmersed in music.
http://www.kanonweb.jp/ (This is Kanon Wakeshima's homepage)