Grover-Trophy Brass Marching Lyres Cornet/Trumpet Clamp-On Model Brass Marching Lyres Cornet/Trumpet Clamp-On Model Grover-Trophy Brass Marching Lyres make it easier to keep your music organized and viewable while doing parades and halftime shows A great way to keep your music handy while memorizing a show as well Grover-Trophy Brass Marching Lyres make it easier to keep your music organized and viewable while doing parades and halftime shows A great way to keep your music handy while memorizing a show as well