There is more than one artist with this name:

1) Giuseppe Cuna, better known as Azel, is an Italian beatboxer.
2) Azel is a one man experimental electronic project from California, inspired by industrial and trance. He's self released three albums and one EP. Most of it can be heard at http://www.soundcloud.com/azel/

Evidently Azel could also be some kind of instrumental metal band. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.