There are several artists named Icos.

1. Icos is a hardcore punk band from Sweden, formed in 2001 implementing aspects of sludge, post-rock, post-hardcore, and post-metal. Split up in 2009.
http://www.icosonline.com
http://www.myspace.com/icosonline

2. Icos is a 80's retrowave and synthwave producer. https://www.icos-music.com/home

3. Icos was a Chicago-based alternative rock quartet active in the late 90s. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.