I swear to god in the last month iv heard probably every Zeppelin album like 5 times (not a bad thing really) and watched 4 dvds..... anyways while bored and adding to the "album production thread" that was re bumped i figured id do some research and find this list of random Zeppelin song facts... some of em are really interesting!!!
Taken from: http://www.led-zeppelin.org/reference/index.php?m=assorted3
There seems to be a wealth of unusual and interesting background noises, and in some cases foreground noises, in Led Zeppelin songs, some of which are so obvious you really wonder how you missed them when you listened to that song the first 5,000 times.
"Good Times Bad Times" - A suggsted explanation for the hollow sound that Bonzo makes during the opening of the song is that he might have been hitting a cymbal stand. The sound is a crisp, metallic type sound, which gives the impression that a hollow object of this nature is being struck. On the other hand, this could well be a cymbal.
"I Can't Quit You Baby" - Referring to the version on the first album, the odd metallic sound heard on "Good Times Bad Times" recurs through this song as well, which suggests it is probably a cymbal. It doesn't sound as hollow on this song.
"Whole Lotta Love" - Plant can be clearly heard to laugh just prior to the start of the song. The middle section features a lot of randon knob twisting in the studio from Page and Eddie Kramer.
"The Lemon Song" - A gong can be heard right at very beginning of the song.
"Moby Dick" - Careful listening to this song reveals a variety of noises which could range from Bonham moving about on the drum stool to various sqeaking noises, probably drum pedals. There is a particularly odd scraping noise at 1:58.
"Immigrant Song" - The odd buzzing sounds at the beginning of the song are tape noises coupled with the count in.
"Friends" - The fret buzz in parts of the song is due to the guitar being in a different tuning where the sixth string is quite loose, which combined with poor fingering at that fret causes the string to buzz on the fret. The tuning Jimmy is using is a C tuning, C, G, C, G, C, E, where the low E is tuned down 2 whole steps.
"Celebration Day" - The drone that carries over from "Friends" is there to compensate for the rhythm track which was accidentally erased during recording.
"Since I've Been Loving You" - the bass drum pedal has a clearly audible squeak about which Page recently said, 'It sounds louder every time I hear it!' Also, as Plant is singing the first line of the song, "Working from seven..." while he sings "from" a strange wheezing sound can be heard in the left channel.
"Bron-Y-Aur Stomp" - Some interesting extra instruments in this song are spoons and castanets, all played by John Bonham.
"Black Dog" - In the early stages of the song Bonzo can be heard clicking his drumsticks together, keeping time for the band.
"Stairway To Heaven" - Not really a weird sound, but the subject of some occasional discussion in the wind instrument being played at the start of the song. It is a recorder and it's being played by John Paul Jones. This instrument was incorrectly claimed to be a mellotron by _Q_ magazine in 1995.
"Misty Mountain Hop" - There is a mistake in this song in the line that begins "There you sit...", but the band apparently felt the rest of the take was too good to warrant discarding it.
"Four Sticks" - There is the sound of possibly either a cough or someone exhaling at the five second mark of the song. Then again in the left channel at the 41 and 43 second marks, a very similar sound, that sounds like an exhalation. This occurs again at 1:51. Someone, possibly Page, may have had a microphone a little too close to their face. The same sound, although fainter and closer to the middle in terms of the channels, occurs at the 30 and 37 second mark.
"When The Levee Breaks" - The titanic drum sound was created through experimentation by Page and Andy Johns with Page's penchant for distance miking. In perhaps the ultimate case of this, they had Bonzo set up his kit, a brand new one, in the stone stairwell at Headley Grange and experimented with microphones in various positions before placing one a few flights of stairs above him. A similar technique was used by producer Don Was and the Rolling Stones on the song "Moon Is Up", where drummer Charlie Watts is playing at the bottom of a stairwell. Right near the end of the song, where the sound is panning all over the place, the basic riff is also played backwards at one point. The idea of reversing riffs is not all that uncommon, Jimi Hendrix did it frequently.
"The Rain Song" - Bonham's squeaky drum pedal can be heard on this song. The string on this song are not real and are actually John Paul Jones on a mellotron, an early synthesizer.
"Over The Hills And Far Away" - Another track where Bonham's squeaky pedal can be heard, most clearly from about the three minute mark onwards.
"The Crunge" - Again, a sequaky drum pedal can be heard, especially at the start of the song where just the bass and the drums are being played. Page can be heard to depress the whammy bar, he used a Stratocaster on this song, at the end of each phrase.
"Dancing Days" - Another track on "Houses Of The Holy" where Bonham's squeaky drum pedal was somehow overlooked.
"No Quarter" - In a _Guitar_World_ interview Page revealed he lowered the track half a tone to make "the track sound so much thicker and more intense." Plant's voice is also slightly flanged, while Page uses a theremin to create the moaning of "the dogs of doom" that Plant sings about.
"The Ocean" - A phone can clearly be heard ringing at about the 1:38 point in the song. The sheet music that accompanies the box set has the word `ring' printed twice above the percussion tab of this song, so the inclusion of the phone sounds like it was intentional. As well as this, there is also the sound of the squeaky bass drum pedal that is present on "Since I've Been Loving" you, which is most apparent in the early parts of the song. And, yet more odd noises occur at 1:59-2:00 and 2:12-2:13 where it sounds like someone is making the `c' sound, as in the first letter of the word `cat'. Just as Bonham comes to "Two" in the introduction you can hear the first five notes far off in the distance, the result of some sort of production glitch.
"In My Time Of Dying" - Some members of the list with very keen hearing have in the past claimed to have heard the sound a television makes when it's turned on, about half way through this song. The sound they are hearing is produced by the high voltage power supply, or more specifically, the flyback transformer, of the tv which is somewhere around 32,000 volts for color televisions. Not so much a weird noise, as an anomaly, at the 5:44 mark it sounds like Bonham misses a beat. Them cymbals continue as they are but at that time it sounds a bit like a drumbeat is missing.
"Houses Of The Holy" - Recorded initially for the album of the same name, the squeaky drum pedal that can be heard on a lot of the tracks from that album can also be heard on this song. At the 3:41 mark a strange sound, resembling a bird call, can be heard clearly.
"Kashmir" - The orchestra riff that is first heard at the 1:19 point in the song can be heard earlier, in the left channel, very faintly, after each line of the first verse, such as at 0:25, 0:34 and 0:43. What this is, is the original track using the orchestra that was wiped off, but a slight "ghost" of that recording remains and is slightly audible.
"Night Flight" - A strange hissing sound can be heard for around half a second in the right channel before the organ starts.
"Ten Years Gone" - The squeaky bass drum pedal that was noted in "The Ocean" and "Since I've Been Loving You" occurs here as well, although slightly quieter than on both previous occasions. Also, at the 2:59 mark, and faintly in the left channel, a strange sound can be heard, which has been suggested as the sound of a guitar being plugged in. Another sound, sounding much more like a guitar being plugged in occurs between 5:44 and 5:47.
"Sick Again" - Bonzo can be heard to cough faintly at the end of the song.
"Achilles Last Stand" - Despite Page's assertions that there weren't any keyboards on "Presence" between 6:54 and 7:00, on the ascending runs with the staccato background guitar, you can hear what sounds very much like a keyboard. It could also be an extremely affected guitar sound though. Bonham is said to groan at one point during the song, but the time for that is unclear.
"For Your Life" - Plant makes two weird noises after the lines, 'Wanna find myself a crystal, Payin' through the nose.' The two noises sound very much like a snort, most likely a play on the line about crystals and paying through the nose, in reference to cocaine. This starts at around the 5:30 point in the song.
"In The Evening" - The third Zeppelin song on which Page uses the violin bow, the others being "How Many More Times" and "Dazed And Confused", the unusual noises in the guitar solo are caused by the springs of a fully depressed whammy bar.
"Fool In The Rain" - An odd noise can clearly be heard at the 1:05 point in the song. The sound occurs just after the line `And you said that you'd always be true'. The sound is most likely Plant, and may be some sort of play on that line. The sound itself is like a sort of `ppttt' noise made with the lips. A suggested explanation for this involves the meaning of the prior line of the song. When someone makes a hand shape like a gun with a clenched fist, extended fore-finger and raised thumb, the sound they most commonly make when they `fire' the gun is similar to this noise, a sort of `ppttt' noise made with the lips. Hence, it may be that Plant was firing off a shot at someone that had not been true to him. This is a rather tenuous theory however.
"Carouselambra" - The unusual sounds that have been described as `percolating' that occur in this song are most likely to be Bonham hitting some sort of drum as they follow a rhythmic pattern, which rules out other explanations such as perhaps a bong.
"Wearing And Tearing" - At the 0:19 mark a sound that is similar to a phone ringing, one of the newer ones, not the older ones that actually make a ringing noise, can be heard in the right channel.