I first heard this song by Tim Minchin last year a bit before Christmas, and it's become one of my favorite songs for the holidays. It's not 100% applicable to me, but it captures a lot of the spirit and emotion that I feel in this season. It's particularly poignant for me since my family has wound up being so scattered about the country in the past few years (and the bits about his daughter are swiftly becoming more meaningful, too). For those listening for the first time, note that the tone (or at least the focus) of the lyrics shifts somewhat about halfway through.
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Oh, and in case you're confused about the title, note that Minchin lives in Australia: Christmas tends to look a bit different down there.