Equale
An equale is a composition of music for several instruments of the same type. Most of the time, they are short festive pieces. Most of them were written to be played at funerals, or at days where the dead are remembered, such as All Souls' Day. The instrument commonly used is the trombone. Among the best known are probably Drei Equale für vier Posaunen WoO 30, by Ludwig van Beethoven (composed 1812), and 2 Aequale für 3 Posaunen by Anton Bruckner, composed 1847.
Equale Media
Score of "Drei Equale für vier Posaunen" ("Three Aequales for four Trombones") by Ludwig van Beethoven in Ludwig van Beethovens Werke, published by Breitkopf und Härtel in 1888
Beethoven's funeral procession, led by a processional cross and four trombonists and sixteen singers performing Seyfried's voice arrangement of his Equali
Trombones announcing a death from the belfry and playing at a Moravian funeral in Bethlehem, Pennsylvania, 1874