There are several artists using this name:

1) B3 is an American boyband from New York, who achieved some significant success in Germany. The band split in December 2004.
Recording history:
* First (18. Solders 2002)
* N. Y. B3 (24. March 2003)
* N. Y. B3 Special Edition (17. November 2003)
* Living for the Weekend (27. September 2004)

2) B3 is a Serbian hip-hop artist who was popular in the '90s.

3) B3 (http://www.b3.sk/) is a Slovak pop band with various members —
Peter Graus, Tomáš Zubák, Ivan Hirländer and Marián Kachút (on some albums with a female singer — Tina)
Discography:
* B3
* Drobnosti majstrov
* Audiohead
* Be free for friends

4) B3 is a jazz rock band from Berlin, Germany.
Line up: Andreas Hommelsheim (Hammond B3, keys), Lutz Halfter (drums), Chris Krauss (bass), Ron Spielman (vocals, guitar). Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.