I liked the idea of a lot of guitars rising, staying steady, and then falling in pitch. The last part is "heading south". UsingEnglish.com says 'If something heads south, it begins to fail or start going bad.'

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Heading South
UP:
I'm movin' on
I'm heading out
Right out the door
Without a doubt

STUCK:
It's in and out
Up and down
Not gettin' nowhere
But round and round

DOWN:
Things looking worse
Should shut my mouth
I'm out of gas
And headed south!