The title comes from the album's original format – two 45 RPM 12" discs. This was the last studio album by the band to feature Chris Watson as a member.
Sides A and B were recorded at Western Works, Sheffield in October 1981, while Sides C and D were recorded at Pluto Studios, Manchester in February 1982.
The track "Yashar" was later remixed as a dance record by John Robie and released as a single.
Stephen Mallinder – bass guitar, vocals, percussion on "Breathe Deep", "Yashar" and "Protection", tape on "War of Nerves (T.E.S.)", "Wait & Shuffle" and "Get Out of My Face", production
Richard H. Kirk – guitar, saxophone, synthesizer, clarinet on "Breathe Deep", "Yashar" and "Protection", tape on "War of Nerves (T.E.S.)", "Wait & Shuffle" and "Get Out of My Face", production
Chris Watson – organ and tape on "Breathe Deep", "Yashar" and "Protection", production
Additional personnel
Alan Fish – drums and percussion on "Breathe Deep", "Yashar" and "Protection"
Nort – drums and percussion on "War of Nerves (T.E.S.)", "Wait & Shuffle" and "Get Out of My Face"
Eric Random – guitar and percussion on "War of Nerves (T.E.S.)", "Wait & Shuffle" and "Get Out of My Face"
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