The music varies from Detroit-influenced ambient techno to intense acid and hardcore. The track "Isopropophlex" uses samples from the arcade game Berzerk, along with a flanged and filtered voice sample. The musician and producer Tom Middleton collaborated on "En Trance to Exit" under the pseudonym Schizophrenia.
Berlin DJ Ellen Allien called the track "Analogue Bubblebath" "a classic tune by the best electronic producer in the world." The author and critic Simon Reynolds writes of its "fluttery, diaphanous riff-pattern and hazy yet crystalline production". The influential publication Mixmag calls it "one of the most perfect tracks ever written". The Guardian describes it as "one of those timeless tracks that convey incredible emotional depth" and notes that "it still stands as a gold standard for electronic music nearly 30 years after its initial release."
Simon Reynolds observes that the rest of the EP "revealed that James was no slouch when it came to industrial-strength hardcore." In contrast to the ambient sound of the title track, the industrial, menacing sound of "Isopropophlex" was described as "astringent" and suggestive of "a nasty corrosive fluid". In an examination of James' work, The A.V. Club describes the track as "restless, a pounding bass line fighting it out with synths that stab through the arrangement with purposeful malice."
The tracks "Analogue Bubblebath" and "Isopropophlex" can also be found on the R&S Records compilation Classics. The EP was reissued by TVT Records in the US in 1994 on both CD and 12" vinyl format.
Impact
The record created a buzz in the UK about Aphex Twin, and on release won immediate acclaim, quickly earning the artist a cult following. The original white label release found distribution in continental Europe. Renaat Vandepapeliere, head of the Belgian label R&S Records, heard the record and then contacted James, which led to the releases James put out on that label in 1992.
The record went on to be hugely influential. Its title track was described as a "redrawing of ambient techno aesthetics" by Rolling Stone. In 2011 The Guardian named its release one of the "key events in the history of dance music". In 2022, Rolling Stone ranked "Analogue Bubblebath" number 62 in their list of the "200 Greatest Dance Songs of All Time".