Here are the mNotation™ orchestral brass parts:
And, also, here are offline versions of the brass parts. They’ll work identically to the online versions, but you don’t need an internet connection: Trumpet, Horn, and Trombone. The offline versions need to be un-zipped onto your laptop, and then you need to drag the file ‘DRAG_INTO_BROWSER'(_your_instrument_name.html) into a modern browser (either Firefox or Safari. Opera probably works, Internet Explorer probably doesn’t). Enjoy!