It received its premiere on 10 August 1992 at the Royal Albert Hall, London, performed by Evelyn Glennie and the Scottish Chamber Orchestra under Jukka-Pekka Saraste.
The music draws on the Advent plainchant of the same name, which appears in its full form only at the end.
There are five main sections to the work: after the introduction is a 'heartbeat' section (representing, according to the composer, "the human presence of Christ"), followed by a 'hocket' dance; transition sequences lead in and out of the central Gaude, after which the dance reappears.
The piece reaches its climax with the unfolding of the plainchant in chorale form, after which the work is closed by a coda in which the heartbeat motif and the percussionist on tubular bells have the last word.
The piece makes important use of a soloist who plays various percussion including tam-tams, two snare drums, congas, timbales, gongs, woodblocks and marimba.