cornetguy

For range building also try study #5 concentrate on good sound and accuracy, rather then speed. don't go any higher until the last note sounds easy and open.

I also do them 2-6 all in minor whole tone etc.

Also try tonguing studies 2 and 3.

The Advanced Lip Flexibility is Charles Colin not Phil Collins, easy mistake to make though. It is also very good for this.

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