Creator Breakdown: Nearly everyone involved with the record was going through hardships regarding this album. Steven Drozd was in the midst of battling an addiction to heroin which nearly caused his arm to be amputated, Michael Ivins nearly died in a car crash (both accounts would be recalled on "The Spiderbite Song"), Wayne Coyne's father was dying of cancer, and on top of it all, Warner Bros was seriously considering dropping the Lips from their label after nonstop disappointing sales and a damaged relationship regarding Zaireeka (which was so expensive that Warner Bros had to build a new studio just to be able to record the thing). Luckily a compromise was made (see Executive Meddling) and the critical acclaim alone was able to convince Warner Bros to let the band stay.
Executive Meddling: Upon its release on CD, several remixes of songs aimed at radio play were added to the album. This decision was part of a compromise between the Lips and their label Warner Bros., whose relationship began to be tested after the explicitly non-commercial (and costly to make) Zaireeka. The album as the band originally intended wouldn't be released properly until 2006, and only on Vinyl and the 5.1 Stereo Mix on DVD mix.
No Export for You: Certain songs are removed off of international versions of the album. "The Spiderbite Song" is only on North American copies of the album, while "Slow Motion" is only on international prints for the album; "Buggin'" was never released in its' original, non-remixed form until 5.1 Stereo Mix came out in 2006. The only version getting all songs as normally intended are on the 5.1 Mix and the vinyl pressings, which are available worldwide. The reason being as explained above, the compromise for making Zaireeka. And the worldwide Digital Version is just the U.S. version but with the "Race for The Prize" versions switched around.
Tough Act to Follow: This album came straight after Zaireeka, which was intended to be heard on four CD players simultaneously! Judging by all the acclaim and success that followed, the band pulled it off pretty well.
What Could Have Been: "Sleeping on the Roof" was originally supposed to be an entire EP worth of Ambient music, hence why the full title of the song is called "Excerpt from Should We Keep The Severed Heads Awake??"
"Race For The Prize" could have been on Zaireeka. This is why the David Fridmann mix includes two drum tracks - each drum track would have been on a different disc of Zaireeka
The Orchestral Sounds in "Race For the Prize" came from Steve Drozd messing with one of the tapes a ton so they became completely distorted. To this day the band has never been able to recreate the sound; so when they play the album live, they tend to just play with an orchestra to achieve the same effect.