Because concerti often move to a minor key in the second movement, concerti that include the instrument in their first movement and are from the period before the valved trumpet was commonly used usually exclude the trumpet from the second movement.
Así pues, los "concerti" escritos antes de que se generalizase el uso de la trompeta de pistones, que incluían una trompeta en su primer movimiento y la excluirían en el segundo.