D improvisation if it is true that the notes seem random as if he forgot he is therefore improvising
Answer: Sound on a brass instrument comes from a vibrating column of air inside the instrument. The player makes this column of air vibrate by buzzing the lips while blowing air through a cup or funnel shaped mouthpiece. The mouthpiece connects to a length of brass tubing ending in a bell.
Explanation: its called InTeRnEt!???!?!??!?!?!?!?!!?!?!?!??!??!!
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