After the Moody Blues released their magnum opus Days of Future Passed in 1967, the big hit single from the album was, of course, "Tuesday Afternoon," which reached the Top 25 the following summer. They also released "Night in White Satin" as a single, but it failed to crack the Hot 100 in the U.S.
Then, in 1972, the Moodies put out "Nights" again as a single, and this time it went all the way to Number Two. I was unaware of all of this when I wrote that post on songs that waited forever to chart. Also, Justin Hayward supposedly wrote it when he was 19, which would have placed its origin sometime around 1965. And it's never really gone away, has it?