Gavin Bryars’s music and the special qualities of the Latvian Radio Choir fit one another like hand and glove. And the glorious acoustic of Riga Cathedral – which I extolled in the Onyx recording of Kancheli and Taverner (11/07) – lends its aura to his Cadman Requiem and two 13th-century chants (the latter chosen because they relate to, and effectively offset, the three Bryars Laude).

All this music has a restrained purity that never admits suspicions of opportunism, in the way some work in this spiritual minimalist field does. There is more floridity to Eriks Esenvalds’s Legend of the Walled-up Woman, but this too feels like part of the natural voice of the music and its subject matter. Only in Peteris Vasks’s Zilis zina does the impression surface of special effects for special effects’ sake. And even that can be taken as an effective vehicle for this remarkable choir to display the full range of its talents.

Bryars’s 12-minute Glorious Hill, which lends its title to this generously filled disc, sets a marvellous Italian Renaissance text that imagines God addressing Adam as He confers free will on mankind. Even more powerful in its inspiration and consistent in its focus is the Cadman Requiem, composed in memory of a friend killed in the 1988 Lockerbie disaster. In this new version with organ rather than strings or viols, the music is utterly gripping, and affinities with the Fauré Requiem stand out in ways I had not previously registered.

Overall then, an eminently collectable disc, beautifully sung and recorded from first note to last.