There is more than one artist under this name:

1. D is a Japanese visual kei band formed in March 2003 by vocalist ASAGI (ex-Balsamic, JE*REVIENS), guitarist Ruiza (ex-Distray, LAYBIAL), and guitarist SIN (ex-WITH SEXY, Vasalla), former members of Syndrome. They were joined by bassist レナ (Rena) (ex-PERSONA) and drummer HIROKI (ex-Aioria, S to M). SIN left the band early on in 2003 and was replaced by HIDE-ZOU (ex-Clair de Lune, As'REAL, S to M) who had been support during the band's brief time under the name Night of the children. In 2005, レナ (Rena) also left the band and was replaced by Tsunehito (ex-ギブス (Givuss), SCISSOR) on bass. D was on their own independent label GOD CHILD RECORDS until in 2008 when they signed with major label Avex Trax. In June 2011 they ended their contract with Avex and their management to return to their own label once again. The band publishes a magazine called Mad tea party MAGAZINE and had a radio show Night Radio “D”, as well as their own TV program called 薔薇の館 (Bara no Yakata). During the band's time together, Ruiza has released a solo mini-album titled amenity gain and ASAGI has released a solo single called Corvinus. ASAGI is the owner of D's label GOD CHILD RECORDS as well as his own brand Rosen Kranz which currently produces the band's goods.

D Official Site

2. d is Orange County, California-based musician Darron Bergdorf, who merges influences from funk, rock and eletronica. Backed by Chris Bliss on bass, Bergdorf has written, composed and recorded over 3000 original songs under the stage name d, including 4 contemporary ballets, one of which appeared at the Kennedy Center in Washington D.C.

To date, d released 13 albums and has collaborated with countless artists.

3. D provided vocals to the song World with me on the Phantasy Star Online Episode I & II video game soundtrack. Due to inconsistencies in the Phantasy Star Online Episode I & II and Phantasy Star Online Episode III C.A.R.D. Revolution soundtracks booklets (D being only credited in the latter one), D is believed to be the same person as LOREN, who performed the opening and ending songs to the first Phantasy Star Online game, but there is no reliable source to confirm or deny such informations.

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