Okay, I’ve been talking about this Bb ascending horn for a while and now I should probably prove that it does indeed exist. Here it is in its current condition,

This has had to be a side project because I am readying a new double horn to sell at the IHS workshop. It still needs its descending tuning slide and an F extension. As you can see, the sideways tuning slide allows for the full length mouthpipe and the descending tuning slide will go from the mouthpipe to the topmost outer slide. I hope to have it done in the next few weeks!