John Packer JP273 step-up Bb baritone horn outfitIntroducing the John Packer JP273 step up Bb baritone horn outfit The next step up from the JP173, the JP273 is a great option for advancing players, and ideal if you are in a training band. Made from yellow brass with a gold lacquer finish, this instrument is highly durable, built with a rigid construction, making it a great option for use in schools, music services and training bands. Excellent features The JP273 features a fully compensated system