Arcanum (stylized as a͡rcānˈum on the cover) is the ninth album by Acoustic Alchemy, released on June 18, 1996. It would be their penultimate release on the GRP jazz label.
The production on this album differed from normal; the band recorded the disc live at Pinewood Film Studios, London, UK. They enlisted the help of the London Metropolitan Orchestra to provide backing.
The album contained twelve tracks, three of which were new ("Columbia", "Chance Meeting" and "Something She Said"), and the others re-recordings of tracks selected from the band's discography to this point.
Footage from some of the recording of this album appears on the GRP video release, "Best Kept Secret" (VHS 1998, DVD 2006).