What is dance of death?

Iron Maiden 2003 studio album release

Tracks

1 - Wildest Dreams
2 - Rainmaker
3 - No More Lies
4 - Montsegur
5 - Dance Of Death
6 - Gates Of Tommorow
7 - New Frontier
8 - Paschendale
9 - Face In The Sand
10 - Age Of Innocence
11 - Journeyman