I was trying to help you. My comments were intended to point you in the direction of producing a more realistic sounding recording. I asked if it was rendered in a notation program because it's more difficult (impossible) to produce a realistic recording in a notation program. But, you're using Sonar and that has substantial capability to produce remarkably realistic renderings.
My first music computer was an Apple II+ with all of 48K of RAM, so I've been at this for a while. If you're using Sonar then you should look into cc1 and cc11 automation. One automates the volume the other automates velocity cross fading to emulate the change in timbre that a horn player would normally achieve through breath control. If I may suggest getting to know VI-control, https://vi-control.net/community/
There are people and sample developers there who can achieve recordings that are almost indistinguishable from the real thing with samples. For example listen to this rendering of Mahler's Adagietto:https://www.youtube.com/watch?time_continue=41&v=6CE74bJ-sdk
Can you believe that was done with samples?! Here's the thread on VI-controll where it gets discussed.https://vi-control.net/community/threads/strings-ultimate-challenge-mahler-5th-adagietto.74197/
None of my comments in this forum are intended as anything but constructive. We've discussed your music and I've found some of your pieces delightful. You have a mature style and it's not going to change, so I don't comment on the music unless I'm inspired to. In this horn piece I found the very ending delightful and said so. But for me the horn sound detracted from the overall enjoyment and I thought you might appreciate some guidance on how to make it sound better. If you'd rather I didn't then I won't comment on your pieces anymore.