Okay, so I'm working on Sleigh Ride (Leroy Anderson).
At the end there's supposed to be a horse sound (played by muted trumpet).
Anybody have any idea I can accomplish that?

Thanks for any help,
Gus

Just trying to imagine how I would attempt this, use Trumpet on a hidden staff (notation would look horrendous) doing a descending chromatic scale in 16th notes (semi-quavers?). On EACH note (copy and paste from the first one) insert a MPC for Pitch Bend, Style-Linear Sweep, Time Resolution-Thirty-Second, Setting 2 box checked with slider pushed about 1/4 to the right.  Just a guess.