The Jupiter 456S Deluxe Alto Horn is a great choice for the player looking for a quality Eb alto horn. The 456 features a .433" bore with a 7.2" upright bell for excellent response and Stainless Steel Pistons for quick action. The Eb Alto Horn"s primary use is with British Brass Band ensembles and some solo literature. You will also find the Alto Horn in the original instrumentation of many Sousa-era American marches.