Adam Carter, known by the stage name, A-Plus, is a Jamaican-American rapper and producer. He is one of the founding four members of the Oakland, California-based underground hip hop group Souls of Mischief and, with SOM, a part of the eight-person, alternative hip hop collective, the Hieroglyphics.
 

Born in Denver, CO as the son of Jamaican immigrants, A-Plus moved to Oakland, CA with his family when he was 5 years old. In the first grade, A-Plus met future Hieroglyphics members Del, Casual and fellow Souls of Mischief member Tajai. Tajai eventually introduced A-Plus to future SOM members Phesto and Opio, and the group formed in high school before releasing their debut album, 93 'til Infinity on Jive Records in 1993. After A-Plus and the SOM left Jive, the group was incorporated into the Hieroglyphics in 1995, at the urging of Damien "Domino" Siguenza.
 

A-Plus has contributed to all 7 Souls of Mischief albums, as well as the three Hieroglyphic studio albums. He has also produced or performed on solo projects of various Hieroglyphics members. 
 

In 2005, A-Plus released a remix album, Pleemix, Vol. 1, through Hieroglyphics Imperium Recordings. On May 1, 2007, A-Plus released his debut solo album, My Last Good Deed through Hieroglyphics Imperium Recordings. Since then he's release Pepper Spray, Molly's Dirty Water, Grow Theory, Think Tank Vol 1-2, Legrowlize It! Vol. 1-3, Free Dope, Chamber Games, Blvck Switzerlvnd, Cold Country, Cigano Road Instrumentals Vol. 1-2 and more.