There are 3 projects called Epos:
1) Epos is a name of a project of 2 german dj's and producers: Roger P. Shah & Pedro Del Mar. So far they released three tracks behind this alias called "Vivagio" 2005, "Adagio Espressivo" 2007 & "All Saints Day" 2009 2) Epos (aka Epos 7116) is a one man band from Milan, Italy. His music spaces from power metal to epic metal to prog metal. It's very difficult to classify Epos music into a unique style.
Epos has released only a 3 songs EP called Between myth and history, which can be listened at http://www.myspace.com/eposmetal.