Simplify the following text for a Grade 7 native English-speaking person.
Original: While it is commonly stated that the last movement of Beethoven 's Fifth is the first time the trombone and the piccolo were used in a concert symphony , it is not true . The Swedish composer Joachim Nicolas Eggert specified trombones for his Symphony in E-flat major written in 1807 , and examples of earlier symphonies with a part for piccolo abound , including Michael Haydn 's Symphony No. 19 in C major , composed in August 1773 .
Simplified: The fourth movement of this symphony is one of the first times a trombones or a piccolo is used in a symphony .