The Signature Jazz is the very first design (Design that Started it all) completed in the collaborations between Carl Fischer and Gary Radtke of GR Mouthpieces.  It has a flat rim with a soft bite and high alpha angle. This combination gives comfort with the feel of a slightly larger cup volume.  This gives the ability to be flexible with the sound and color while keeping an even sound throughout the horn. * Due to high demand, please allow 6-8 weeks for delivery unless otherwise notified. ** Gold plating denotes a special order item and could increase delivery time based on manufacturer **