How does one of the extended metaphors (a comparison that lasts for several stanzas or even an entire poem) add to the overall central idea of the poem "Gramma Grows Old with GI Joe"?

Read the excerpt from “man listening to disc.” to tommy potter for taking the time to join us on this breezy afternoon with his most unwieldy bass and to the esteemed arthur taylor who is somehow managing to navigate this crowd with his cumbersome drums. and i bow deeply to thelonious monk for figuring out a way to motorize—or whatever—his huge piano so he could be with us today. which of the following additional features would best enhance the reader’s understanding of this excerpt? a diagram showing the narrator’s route through the city a visual simulation of the man walking down the street audio samples of music by the specified musicians textbook chapters on the history of jazz musicians