There are at least three artists named Entity. 1. Entity is a progressive metal band from Orlando, Florida. They have released a 5 track EP named The Meaning of Infinity which is available for free from their bandcamp.
http://entitymusic.bandcamp.com/ 2. Entity is an extreme metal band from Leicester. 3. Entity is a musical collaboration between three drum&bass and nu-skool breaks producers / DJs, Dave Evans, Bill Brooks, and Andy Sloss.

Read more about Entity on Last.fm.