Hi I have been reading the text about farkas embochure and came across this and that disturbed me a bit, can someone explain what the author of the text was writing about. thank you
The Farkas problem
If playing with a neutral or bunched chin, the center of the lower lip is supported by the chin muscles. This assists in closing the aperture.
But the Farkas method recommends a taut chin, as used by horn players. While this seems to work fine with the French horn, trumpet players doing this sometimes end up with severe trouble. The taut chin pulls the center of the lower lip downwards, opening the aperture. This is counter productive to the efficiency principle, and should therefore be avoided.
(There are many horror stories about trumpet players, having ruined themselves this way.)