This site is under construction
Some good resources
Practicing by Rich Seraphinoff
Historic Horns with Rich Seraphinoff
Practicing - David Cooper
Orchestral Excerpt Insights: Cooper Plays Strauss
In this Orchestra Excerpt Insight, CSO Principal Horn David Cooper walks viewers through the techniques he uses to practice the opening solo from Strauss’ iconic tone poem, Ein Heldenleben.
A nice simple description of some of the fundamentals needed to play a horn well. While I never used this words in this context they do provide a nice overview of the core areas that are needed to play brass instrument well.
https://www.hornsociety.org/57-ihs-info/newsletters/1711-body-center-breathe-and-flow