There are six artists with the name Neptune: 1. A rapper from El Centro, California that recently released a mixtape entitled "Fuck Homework" influenced by J.Cole, Kid Cudi and OFWGKTA. 2. An alias of The Cinematic Orchestra (J Swinscoe & Patrick "PC" Carpenter) whose track Soul Pride featured on the Ninja Tune "Xen Cuts" compilation (2000).
http://www.discogs.com/artist/Neptune; 3. A melodic death metal band from Italy influenced by the Gothenburg style.

Read more about Neptune on Last.fm.