1 a : a psalm or hymn sung antiphonally or responsively
2 : a song or hymn of praise or gladness
3 : a usually rousing popular song that typifies or is identified with a particular subculture, movement, or point of view^
-according to the Merriam-Webster’s Online Dictionary
To Anthem on an Anthem:
1 : to state an opinion or reflect critically on a person, group, idea and/or situation that carry cultural significance to an individual or group.
2 : Cause to rethink.
-according to Anita Abbasi’s Online Dictionary of Making Shit Up.