Any good free sound for Soprano Trombone?

So, I'm transcribing Bach's cantatas among other works and I need soprano trombone for this. Ach Gott, vom Himmel sieh darein BWV 2 for example has a whole trombone quartet of SATB doubling the choir SATB. I know I could use MS Basic, but since all the other trombones in the piece are in range of Muse Sounds, I think it would seem kind of off to have Muse Sounds for everything but soprano trombone(range reasons) and organ(cause of me using a VST for a better organ sound than what I'd get with MS Basic).