Some of my horns seem to wear me out more in rehearsal than others... and they don't do that when I practice alone.
This leads me to theorize that, the more different my sound is from the mostly-Bach section, the harder I have to work to blend with the others.
My Custom Build Model 240 sounds a lot like those Bachs... and it feels like I can play it all day and night. I leave rehearsal ready to play for a couple more hours.
My Lightweight 400 Model 217 sounds nothing at all like those Bachs... and I can't play it for the entire two hours without getting worn out.
Some of the others are more in-between... and so are their sounds.
Since I would hate like hell to not be able to play any of my horns in rehearsal or for a concert, I'll play around with some different mouthpieces I have to see if I can brighten up that Lightweight 400 and see how it goes.
Have any of you noticed that it takes more work to blend a dissimilar horn?