There are at least two artists using the SB alias:
1) SB is Sean Eric-Baraka Butler, a hip-hop artist from Chicago, US. 2) SB may also be an alias of SundB who has released instrumental hip-hop records on the kreislauf netlabel. The following is about Sean Eric-Baraka Butler. Named “one of Chicago’s ten hottest rising artists” by the Chicago Tribune, Sean Eric-Baraka Butler, bka Sean "SB" Butler, is at the forefront of a hip-hop revolution. His motivational lyrics and passionate stage show have earned him international recognition from devoted fans and industry insiders alike.

Read more about SB on Last.fm.