Acnalbasac Noom was Slapp Happy's second LP, recorded in 1973, and engineered by Kurt Grauner in Faust's legendary Wumme Studio using Faust as the Slapphappy house band; it was originally rejected by Virgin Records, who made the group re-record the album with different musicians as Casablanca Moon, though through time Acnalbasac is still the definitive and preferred edition.