HOLD. In using the word ‘hold’ I am referring to holding the instrument correctly, and, of equal importance, ‘holding yourself’ ie... correct posture. It is very important to sit or stand up straight, not rigid but comfortably upright

BREATHE. Most people believe that they can breathe correctly (if you are still alive it is usually assumed you are breathing correctly!). but are you able to utilise the full extent of your lungs? You should use your diaphragm and stomach muscles to control your breathing. When playing, breathe through the sides of your mouth (so as not to disturb the embouchure), not through your nose.

... not rigid but
comfortably upright.

You must breathe through your mouth when playing!

The Elements of Holbarto

If the note has a good start it has every chance of being a good note!

Push air through your instrument.

ARTICULATE. ‘Articulation’, the start of the note, ( correct use of the tongue, embouchure, diaphragm etc...) earns its place amongst the ‘principal 4’ most things to do because if you give a note a good start it has every chance of being a good note.

BLOW. Blowing, or more accurately, pushing air from the lungs using the diaphragm and stomach muscles in a controlled way through the instrument (remember to keep your cheeks firm!).