First movement of the "Hunt Symphony" by Leopold Mozart
Yes!! This truly can be done. Notice the suspended funnels to help project the sound. Notice that the two players on the left of your screen have longer instruments (hoses), thus lower-pitched "horns." It is the vibration coming from the lips in the embouchure which sets the sound in motion through the pipe, whether it be made of brass, nickel silver, or a garden hose.
So you wonder if "I" have ever played a garden hose? YES, I HAVE!!!!
Seriously, I have. Really.