Pierre Boulez conducts Gurrelieder in surround sound

Session photograph, Pierre Boulez conducting the BBC Symphony Orchestra and Chorus at the Methodist Central Mission in West Ham, London, in 1974

Surround Sound at the Stereo Society:
To Surround Sound, an Introduction (2001)
by Mike Thorne.
Where are we now?

To Quadraphonics and Music (1974)
by Mike Thorne.
Originally published in Hi-Fi News and Record Review Annual, UK, 1974
About the musical possibilities of quadraphonic surround sound, and some speculation about potential future developments. The ideas still apply in today's 5.1 surround sound environment.

To Recording Gurrelieder (1975)
by Paul Myers (Director, CBS International Masterwork) and Bob Auger (Bob Auger Associates).
Originally published in Studio Sound, UK, June 1975.
In fall 1974, in one of the most complex sessions London has seen, Gurrelieder was recorded by CBS for stereo and eventual quadraphonic release. The musical, production and engineering background is covered, from both stereo and quadraphonic viewpoints.

To Four Sides of the Moon
by Alan Parsons.
Originally published in Studio Sound, UK, June 1975.
Pink Floyd were among the earliest innovators to use four channel sound, and Dark Side of the Moon has won many awards, including several for sound engineering. The author, who engineered these and many other sessions for the band, discusses the quadraphonic record production, and contrasts it with the presentation of multichannel sound on stage.

To the Production of Quadrafile (2001)
by Mike Thorne.
Four sides and four quadraphonic systems, this double album released in 1975 had identical musical sides which differed only in their quadraphonic surround system. The music varied from Pink Floyd's Money to a special remix of parts of Tubular Bells. It sounded really good, but then quad went and died on us.