| This is the first song on Led Zeppelin's debut album. |
| Jimmy Page passed his guitar through a Leslie Speaker to create a swirling effect. The Leslie contains a rotating paddle and was designed for organs, but some musicians used it to process guitars and vocals. Eric Clapton used it on "Badge." |
| John Bonham established his skill pounding the bass drum pedal on this, an effect many drummers tried to copy. |
| Led Zeppelin played this at their live shows until 1970. |
| Page put microphones all over the studio to capture a live sound when they recorded this. |