a.    Slowly slur from your first note (C in the 3rd space of the stave) down to the next harmonic (G on the 2nd line) and back again. This needs to be repeated until the lip compression between the two notes is comfortable. Think of the iris aperture getting larger and smaller.

b.    Play the same exercise slowly down through the chromatic fingerings of the trumpet - 0, 2, 1, 1+2, 2+3, 1+3 and 1+2+3

c.    On the reverse, ascending, add a higher harmonic (E in the top space)

d.    Build more exercises up to the top register and down to the pedal notes until the whole compass of the range is comfortable.

e.    The size of the cavity in the mouth is important. This is created by the tongue being in different aspects of the mouth. For the higher notes the cavity is decreased because the tongue is high when forming the syllable ee. The middle register cavity is created by the lower tongue forming the syllable oo. The lower range requires the shape of ah when the tongue is fairly central. (The Doctor always asked you to say ah as it opens the throat for his inspection)

f.    As an exercise is played up and down so too is the cavity shape changed thus - ah - oo - ee - oo - ah.

g.    The lip aperture must remain a circular iris diaphragm hole compressing smaller as the notes rise and relaxing larger as the notes lower.

h.    Increase the speed of the exercises also.

i.    Always try to improve your range and stamina in these flexibility exercises.

j.    The breath is the most important part of trumpet playing. All the exercises above should be played with a good deep breath between each phrase. Play each fermata (hold) until the breath has been expelled completely, then breath deeply to play the next phrase.

It is important to REST between exercises. Take a break to let the lip recover before going on to exercise your  Articulation.