There are several artists with the name Radius. 1)
RADIUS (nee Ramon Norwood)  
is a focused multi-dimensional hiphop/electronic based artist from South Chicago. Radius started crafting beats in 2001. After producing numerous tracks for local rappers he began to further hone his skills as a producer/live performance artist by winning in Chicago area beat battles and later performing in various hiphop/electronic showcases.

Read more about Radius on Last.fm.