This album was originally recorded in 1973 in Germany under a working title of Casablanca Moon with Faust as Slapp Happy's backing band, but Polydor Germany rejected it. After moving to London and signing with Virgin Records, Slapp Happy re-recorded it (at Virgin's request) and it was released in 1974 as Slapp Happy. A second UK pressing of the album used the title Casablanca Moon on the label (though not on the cover). Later CD reissues officially used the title Casablanca Moon.
It was not until 1980 that Recommended Records released the original recording (with Faust) as Acnalbasac Noom (Casablanca Moon with the words written backwards). For a comparison of Slapp Happy and Acnalbasac Noom, see Acnalbasac Noom.
Writing in The Rough Guide to Rock, Mark Ellingham noted: "Slapp Happy found themselves at Virgin's Manor studios, recording the album with a virtual chamber orchestra of musicians."