It was 47 years ago today that the Rolling Stones recorded one of the most memorable riffs in rock music, "(I Can't Get No) Satisfaction".

Rolling Stones Big Hits Legend has it that Keith Richards woke up in the middle of the night with the distinctive eight-note riff in his head and recorded the song on a portable tape recorder he traveled with. According to Richards, the actual tape contains 15 seconds of the song's riff and "40 minutes of him snoring."

"The lyrics to this were truly threatening to an older audience. This song was perceived as an attack on the status quo," Mick Jagger added in an interview with the BBC.

Richards said that he originally thought the song would only be good for use as an album track,admitting to author Phillip Norman that, "I never thought it was commercial enough to be a single."

"(I Can't Get No) Satisfaction" debuted on the Billboard Top 40 on June 19th, 1965, and on July 10th it hit Number One, topping the charts for four weeks. Is "Satisfaction" the most identifiable guitar riff in rock? What are some of "Satisfaction's" biggest competitors for great rock intros? Let us know in our facebook comment section.