The Last of Us' episode 3: The ending Linda Ronstadt song

What's the significance of the Linda Ronstadt song "Long Long Time" that features in "The Last of Us" episode 3?

Linda Ronstadt's 1970 Hit 'Long Long Time' Is Back in the Spotlight After 'The Last of Us' Episode

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Linda Ronstadt will NOT receive royalties for use of song in HBO's The Last of Us

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Linda Ronstadt Song 'Long Long Time' Soars After 'Last of Us' Ep

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Last of Us Co-Creator Explains Choosing Linda Ronstadt's Long Long Time