 Curtis Mayfield's 1963 hit "Amen" also features a marching rhythm, as does the US Top 40 hit, "Burning Bridges" by The Mike Curb Congregation (1971).In Vietnam and in particular in the Second Gulf War and in Afghanistan, recorded music (often featuring rap music) has been used by some soldiers as they travel, prepare for and engage in battle.Performers such as Eminem have written songs with specific reference to the current wars including "Bagpipes From Baghdad".