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When something groovy happens, you hear about it: a feel-good song moment and one true fact, usually every week or two.

Three glowing motion lamps, pink, yellow and blue, on a shop shelf

Motion lamps glowing on a shelfSnap by Dean Hochman / CC BY 2.0

How long ago was that?

Type the year a song came out and we'll do the math: how many years it's been, and when its next round-number birthday is.

Simple arithmetic only. A song can come out on different dates in different countries, so the reference page has the final word.