Features verdi bass trombone Description Product Description This is an instrument, any serious orchestral tuba player will want to add to their collection. This is serious fun! The cimbasso was originally an Italian instrument specified by Verdi and other Italian opera composers to be used as the bass voice for the brass in the orchestra instead of a tuba. But I have heard some great jazz played on this horn and it gives a great blend to trombone ensembles! Specifications Bore: 18.5mm Bell: 270m 5 rotary valves with tuning trigger Nickel leadpipe Nickel inner and outer tuning slides Engraved valve caps Detachable bell sectionGold Lacquer( I can special order silver or raw brass) Supplied with lightweight wheeled case and special shallow cup mouthpiece. The rotary valves and linkage are extremely well machined and crafted, smoothly operating and so quiet. This also includes the trigger linkage on the 5th valve. All of the slides are nickel silver and are beautifully and precisely lapped for a smooth draw.Here is a beautiful demonstration of a cimbasso, although not a O'Malley horn, (one that costs 3times as much) it is a good example of what can be done.