Originally broadcast on 26 August 2013, the radio play is now available as a luxury package resembling a hard-backed book, including a CD carrying the 54-minute play, which includes the majority of the Dark Side of the Moon album, plus a 56-page bound insert of the play’s script featuring all the dialogue and stage directions, plus Roger Waters’ original lyrics from the album.

The release also features a bonus disc with text translations in German, French, Spanish, Italian, Dutch, Portuguese, Japanese, Mandarin and Russian.

‘Darkside’ is an abstract and compelling drama which follows Emily, a philosophy student, through a series of thought experiments, which are vividly brought to life. The play also ranges over a series of grand themes, which are both thought provoking and laced with Stoppard’s characteristic wit and humour.

The cast is impressive, with Bill Nighy as Dr Antrobus/the Witch Finder, Rufus Sewell is Mr Baggott/Ethics Man, Adrian Scarborough is Fat Man and Amaka Okafor is Emily.