Music Goes 'round & Around lyrics

I blow thru here
The music goes round and around
Whoa-ho-ho-ho-ho-ho
And it comes out here
I push the first valve down
The music goes down and around
Whoa-ho-ho-ho-ho-ho
And it comes out here
I push the middle valve down
The music goes down around below
Below, below, deedle-dee-ho-ho-ho
Listen to the jazz come out
I push the other valve down
The music goes round and around
Whoa-ho-ho-ho-ho-ho
And it comes out here

Submitted by Guest

What do you think is the meaning of Music Goes 'round & Around by Ella Fitzgerald?