Buzzing - part 3

Use a metronome. Set it to MM=60.

Take in air on count 4 (after breathing mark) and close lip by saying "UP".  Buzz a C for 2 counts, then try to make a
glissando up to a D by increasing the airspeed, hold the D for 2 counts, then slide down to the C.
Next bar: Hold C, then slide down to B, then back and hold C for 4 counts. If this is hard at first, take a rest. Then repeat the exercise (5 times in all).