This was a rare ballad for The Stones. It was the first song they recorded in Jamaica for Goats Head Soup.
Keith Richards does not play on this track. Stones guitarist Mick Taylor revealed that composition of this song started out with just Mick Jagger strumming guitar, and then everybody joining in.
Producer Jimmy Miller was not happy with any of Mick Jagger's four takes. Jagger refused to do any more, preferring to enjoy Jamaica instead.
That's Nicky Hopkins on piano duty here. Hopkins tended to take the slower, ballad-style pieces while Ian Stewart took the faster jam rock, and Billy Preston would take over the piano for the funk and soul numbers.
And while we're on Nickys, Nick Harrison did the string arrangements for "Winter" and "Angie," also from this album. Harrison wrote both classical pieces for string quartets and orchestras, and contemporary rock for the Stones and Joe Cocker.
Speaking of winter, not many people realize that the winter solstice (in the northern hemisphere, that's the shortest day and longest night of the year) changes slightly from year to year. Sometimes it's on the 22nd of December, through usually it's the 21st. Blame the wobbly Earth orbit and nature's general lack of concern for humanity's needs to have a nice tidy calendar. Oh, and Mayan calendar fans will fondly remember that the alleged (very false) date of the end of the calendar was slated for the 2012 solstice, which just happened to occur at 12/21/12 11:12PM. Numerologists practically fainted.