Anthem (SSATTB) for Trinity Sunday (1963) by Philip Tagg (1962), sung by the choir of King's College Cambridge directed by David Willcocks. The audio recording is pretty bad (instances of distortion due to excessive input volume on a Philips amateur reel-to-reel tape recorder with a "magic eye" and then transferred to cassette tape!) but the performance is so good that it's definitely worth a listen. Not a bad piece either, even if I say so myself (Philip Tagg). Visual accompaniment: synchronised full score. The actual anthem [3:42] is preceded by some explanatory comments and followed by some brief credits.