Grover-Trophy Brass Marching Lyres Trombone 9/16 in. Clamp Brass Marching Lyres Trombone 9/16 in Clamp 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