A March is musical piece in which the tempo and main beat is set to match the steps of the parading bands, soldiers, or other marching performers or showmen. The tempo can be a slow as funeral steps or as quick as marching..
In simple terms, Opera is a musical theatrical drama in which the actors are singers. The majority of acting parts will be sung as opposed to spoken as in a play. Opera has been famously loved for centuries for its wealth of style..
The Requiem is used to create a solemn setting for the Roman Catholic Mass for the dead. The mood of this music is meant to represent the solemnity or dignity of the occasion. Many composers have used this type of setting..